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Calculator Plus Easy

A calculator that teaches back.

Scientific calculation, graphing, formulas, study tools, and real-world STEM workflows in one student-first workspace.

Coming to iOSSee features ↓View screenshots
WHY WE MADE IT

Because powerful math software can be capable and still explain what it is doing.

APP SCREENSHOTS

See it in action.

Real screens from Calculator Plus Easy, shown large enough to see the details.

Calculator Plus Easy screenshot 1
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Calculator Plus Easy screenshot 2
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Calculator Plus Easy screenshot 3
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FEATURES AT A GLANCE

What Calculator Plus does best.

Focused capabilities, designed to make the whole task faster and easier to understand.

01

Scientific calculator with step-by-step teaching mode

02

Multi-function graphing, tracing, zoom, and value tables

03

Offline Problem Coach for plain-language word problems

04

Hundreds of STEM, finance, engineering, and planning tools

WHAT YOU CAN DO

Built for the whole task.

Start simple, then go further when the job calls for it. These are the everyday workflows Calculator Plus is designed to make easier.

01

Calculate without changing apps

Move from everyday arithmetic into scientific functions, constants, conversions, and more advanced expressions in the same workspace.

02

See how an answer was reached

Teaching views break supported problems into understandable stages so students can learn the method instead of receiving only a final number.

03

Graph and inspect functions

Plot multiple expressions, zoom and pan, trace values, and use tables to connect an equation with its visual behavior.

04

Open a tool for the real problem

Guided calculation packs organize formulas for STEM, finance, engineering, planning, and other practical tasks with labeled inputs and explained results.

THE NERD SECTION

For people who want the details.

Calculator Plus Easy combines an expression engine, graphing tools, guided formulas, and teaching workflows while keeping the results readable for someone who is still learning.

01

Expression parsing

Typed expressions are tokenized and evaluated with operator precedence, parentheses, functions, constants, and explicit error handling rather than being treated as a sequence of button presses.

02

Graph sampling and inspection

Functions are evaluated across the visible domain to draw plots, while tracing and value tables expose the numeric samples behind the visual curve.

03

Guided calculation packs

Each workflow defines named inputs, units, formulas, validation rules, and a plain-language result so specialized calculations remain discoverable and auditable.

04

Offline-first coaching

Supported teaching and problem-solving tools are designed to work on the device, keeping the core calculator useful even when a network service is unavailable.

EQUATIONS, MADE VISIBLE

See the shape of an idea.

Actual Graph Studio screenshots. Try the expressions below in the app, then compare curves, trace values, zoom, or open a value table. Trigonometric graph inputs use radians.

Calculator Plus Easy Graph Studio plotting 2*x+3
Algebra · Grades 8–12

A line you can inspect

Slope 2. Intercept 3. The captured trace at x = 0 shows y = 3—an immediate connection between the formula and the graph.

y = 2*x+3
Select image to view full size ↗
Calculator Plus Easy Graph Studio plotting 2*x+3, 0.15*x^2-4, 4*sin(x)
Algebra & trigonometry · High school / college

Three functions. One view.

Compare linear growth, a parabola, and an amplified sine wave. Each function gets its own color so you can see how their behavior differs.

y = 2*x+3y = 0.15*x^2-4y = 4*sin(x)
Select image to view full size ↗
Calculator Plus Easy Graph Studio plotting sin(x), 0.1*x^2-2
Precalculus & function analysis · High school / college

Compare a wave and a curve

Inspect oscillation beside quadratic growth. Tap a curve in the app to select its function, or tap its color to show or hide it.

y = sin(x)y = 0.1*x^2-2
Select image to view full size ↗

Real in-app captures from development builds, not illustrated mockups. Interface details may vary by version.

THE CALCULATION LIBRARY

From first sums to specialized formulas.

Find the level or application that fits your work. Use the main calculator for expressions and supported commands; open Calculations in the app for guided, industry-specific inputs and formulas.

A path through the levels.

Grade bands are approximate: curricula differ, and individual formulas can be useful at more than one level. Examples use calculator-friendly syntax.

Grades 1–5

Build number confidence

Addition, subtraction, multiplication, division, parentheses, fractions, decimals, and percentages.

15-8+4

Check arithmetic and explore order of operations.

Grades 6–8

Connect numbers and shapes

Ratios, unit conversions, area, circumference, triangle geometry, and supported linear equations.

solve(3*(x-4)+2=5*x-14,x)

Move from arithmetic into pre-algebra and geometry.

Grades 9–12

See algebra take shape

Quadratic roots, scientific functions, trigonometry, statistics, and multiple functions on one graph.

roots(x^2-2*x-48)

Explore algebra, precalculus, and calculator-friendly practice.

College undergraduate

Work through calculus

Supported symbolic derivatives and definite integrals, numerical calculus, matrices, regression, and differential-equation methods.

derivative(x^3,x)

Connect symbolic expressions, numerical results, and graphical behavior.

Graduate / selected research-level topics

Go beyond everyday math

Supported mixed partials, limits, infinite-series families, inverse Laplace transforms, special functions, and selected exact symbolic problems.

inverseLaplace(5/(s^2+49),s,t)

Study specific advanced problem families—not a general proof engine or an unlimited computer algebra system.

Trade / professional applications

Calculate for the job in front of you

Guided inputs for planning, finance, engineering, laboratories, business metrics, construction, and practical measuring.

120/6

For example: price per share ÷ earnings per share gives a P/E ratio of 20.

Core subjects. Specialized workflows.

Expand a subject to see its calculation families and practical outputs.

GeometryGrades 6–12 / practical measuring
  • Circle: diameter, circumference, area
  • Rectangle: area, perimeter, diagonal
  • Right triangle: area, hypotenuse, both acute angles
  • General triangle: validity, perimeter, Heron area, all three angles, inradius, circumradius
  • Ellipse: area and Ramanujan perimeter approximation
  • Trapezoid: area and midsegment
  • Parallelogram: area
  • Regular polygon: perimeter, area, interior angle
  • Circular sector: arc length, sector area, chord length
  • Rhombus: area and side length from diagonals
  • Cylinder: volume, surface area, base circumference
  • Sphere: diameter, volume, surface area
  • Rectangular prism: volume, surface area, space diagonal
  • Cone: volume, slant height, surface area
  • Rectangular pyramid: volume and base area
  • Torus: volume and surface area
  • Cube: volume, surface area, space diagonal
  • Hemisphere: volume, curved area, total area
  • Angle lab: radians, complement, supplement
Supply Chain and OperationsCollege / professional applications
  • SAP-style master data: Material, Plant, MRP Area, Base UoM, MRP Controller, MRP Type, Lot Sizing Procedure, Procurement Type, Strategy Group and Availability Check
  • Time-phased demand management: monthly Planned Independent Requirements, scheduled receipts, adjustable planning horizon and even/increasing/decreasing/seasonal demand distribution
  • Monthly MRP run: gross requirements, net requirements, projected available balance, planned receipts, purchase requisitions or planned orders, release offsets and exception messages
  • Lot sizing and scheduling: EX lot-for-lot, FX fixed lots, HB maximum-stock replenishment, minimum/maximum lots, rounding values, safety stock, reorder point, scrap and replenishment lead time
  • MRP: net requirement, planned order receipt, planned release offset, projected ending inventory
  • Inventory policy: reorder point, EOQ, safety-stock coverage
  • Forecasting: mean demand, 3-period moving average, exponential smoothing
  • Forecast quality: MAD, MSE, MAPE and demand standard deviation
  • Statistical inventory: 95% safety stock using service factor and variability
  • Production: takt time, theoretical capacity, labor productivity
  • OEE: availability, performance, quality, total OEE
  • Quality: first-pass yield and defect rate
  • Service: on-time delivery, order fill rate, perfect-order rate and backorder rate
  • Working capital: inventory turnover, days inventory outstanding and annual carrying cost
FinanceCollege / professional applications
  • Time value of money: compound future value, annuity future value and combined future value
  • Lending: amortizing monthly loan payment
  • Equity valuation: P/E, earnings yield, P/B, dividend yield and PEG
  • Capital budgeting: NPV and IRR
  • Cost of capital: WACC and CAPM expected return
  • Profitability: gross profit, gross margin, operating margin, net margin, ROA and ROE
  • Leverage and liquidity: debt/equity, current ratio, quick ratio and working capital
  • Managerial finance: contribution margin, contribution-margin ratio, break-even units and asset turnover
  • Fixed income: bond price, annual coupon, current yield, approximate YTM, Macaulay duration, modified duration and DV01
  • Investment performance: holding-period return, price CAGR and annualized total return
  • Risk-adjusted performance: Sharpe ratio, Treynor ratio, CAPM return and Jensen alpha
ElectronicsCollege / professional applications
  • DC networks: Ohm's law, current, conductance, power, energy, series resistance and parallel resistance
  • AC/RLC: inductive and capacitive reactance, impedance, RMS current, phase, power factor, real/reactive/apparent power, resonance, bandwidth and Q factor
  • Transients: RC/RL time constants, cutoff frequency, capacitor charge/discharge, capacitor energy, inductor current and inductor energy
  • Circuit design: voltage dividers, inverting/non-inverting op-amp gain, LED current limiting, ADC resolution, DAC output and voltage-gain decibels
PhysicsHigh school / college
  • Kinematics: final velocity, displacement, velocity-position relation and projectile flight time/range/height
  • Mechanics: Newtonian force, kinetic and potential energy, momentum, work, power, centripetal force, angular velocity and torque
  • Waves and optics: wave speed, period, photon energy, Snell's law, critical angle, thin-lens image distance and magnification
  • Thermodynamics and electromagnetism: ideal gas, sensible heat, Carnot efficiency, Coulomb force, electric field/potential, capacitor charge/energy and magnetic force
ChemistryHigh school / college
  • Moles, particles, molarity, molality approximation, dilution and mass percent
  • Ideal-gas pressure/volume, density, pH, pOH and hydroxide concentration
  • Zero-, first- and second-order kinetics, half-life and Beer-Lambert concentration
StatisticsHigh school / college
  • Count, sum, mean, median, range, sample variance/deviation, standard error, confidence interval and coefficient of variation
  • Linear-regression slope/intercept, correlation, R-squared and prediction
  • Permutations, combinations and binomial probability, mean, variance and standard deviation
EngineeringCollege / professional applications
  • Materials: stress, strain, Young's modulus, factor of safety and strain-energy density
  • Fluids: Reynolds number, flow area, volumetric/mass flow, dynamic pressure, hydrostatic pressure and velocity head
  • Heat transfer: conduction, thermal resistance, convection and radiation
Calculus, Algebra and BiologyCollege / professional applications
  • Numerical function evaluation, first/second derivatives and Simpson-rule definite integrals
  • Quadratic discriminant, roots and vertex
  • Exponential/logistic population growth and doubling time
  • Hardy-Weinberg frequencies, Michaelis-Menten velocity and first-order drug elimination
Civil and Structural EngineeringCollege / professional applications
  • Rectangular-section properties, simply supported beam moment/shear/stress, point-load and distributed-load deflection
  • Column radius of gyration, slenderness, Euler buckling load and buckling safety factor
  • Concrete/material quantities, waste allowance, mass, slopes, grade ratios, average-end-area and prismoidal earthwork
  • Rectangular-channel Manning velocity/discharge, hydraulic radius/depth, Froude number and specific energy
Mechanical DesignCollege / professional applications
  • Gear ratio, output speed/torque, angular speed, shaft power, horsepower and pitch-line speed
  • Solid-shaft polar moment, shear stress, twist and torsional stiffness
  • Helical-spring index, Wahl factor, rate, deflection and corrected shear
  • Pump hydraulic/shaft power, Darcy head loss, pressure loss, velocity pressure and specific-speed proxy
Aerospace and SpaceflightCollege / professional applications
  • Dynamic pressure, lift, drag, lift-to-drag ratio, stall speed, required thrust, propulsive power, speed of sound and Mach
  • Gravitational parameter, orbital radius/speed/period, escape speed, gravity at altitude and orbital energy
  • Propellant mass, mass ratio, Tsiolkovsky delta-v, exhaust velocity, mass flow, impulse and thrust-to-weight
Energy, Electrical Power and HVACCollege / professional applications
  • Three-phase apparent/real/reactive power, power-factor angle, motor output and horsepower
  • Transformer turns ratio, secondary voltage and secondary current
  • Zone volume, ventilation airflow, sensible load, cooling tons, COP input power, dew point and daily HVAC energy
  • Solar array power/energy/area and battery nominal/usable energy, runtime, load current and daily energy balance
Computing and NetworksCollege / professional applications
  • Payload throughput, transfer time, latency overhead and bandwidth-delay product
  • IPv4/CIDR address count, usable hosts, subnet mask, network address and broadcast address
  • Amdahl speedup, parallel efficiency, instruction rate, CPU time, Little's law, availability and annual downtime
  • RAID raw/usable/compressed capacity, read/write IOPS, write penalty and nominal failure tolerance
Advanced MathematicsCollege / professional applications
  • 3D vector magnitudes, dot/cross products, angle, scalar projection and endpoint distance
  • 2×2 determinant, trace, inverse, eigenvalues and Cramer's-rule linear-system solution
  • Newton-Raphson nonlinear root solving with residual, iteration count and numerical derivative
Calculus Pro and Mathematical AnalysisCollege / graduate study
  • Real analysis: five-point first and second derivatives, third and fourth derivatives, adaptive Simpson quadrature, interval mean, arc length, tangent line and local curvature
  • Multivariable calculus: scalar-field evaluation, partial derivatives, gradient magnitude, directional derivative, Hessian entries/determinant, Laplacian and critical-point guidance
  • Vector calculus: two-component vector fields, divergence, scalar curl, Jacobian determinant, closed-path circulation and outward flux around a circle
  • Differential equations: first-order initial-value problems using Euler, Heun RK2 and classical Runge-Kutta RK4, with method-difference and final-slope diagnostics
  • Fourier analysis: DC, cosine and sine coefficients, harmonic amplitude/phase, truncated reconstruction and pointwise error on a configurable period
  • Infinite series: partial sums, nth term, numerical ratio/root tests, Aitken delta-squared acceleration and convergence cautions
  • Special functions: Lanczos gamma, log-gamma, beta, error function, standard normal CDF, Bessel J0/J1, principal Lambert W and real Riemann zeta
Environmental and AcousticsCollege / professional applications
  • Treatment removal efficiency, mass loading/removal, retention time and chemical dosing
  • Electricity, fuel and vehicle carbon-equivalent accounting and emissions intensity
  • Logarithmic sound-level combination, free-field distance attenuation, multiple sources, acoustic intensity and pressure ratio
Pharmaceutical Calculations & FormulationsCollege / pharmacy and formulation studies
  • Concentration and dilution: percentage strengths, ppm, dilution factor, and strength/volume calculations.
  • Alligation: high- and low-strength blend quantities; sodium-chloride equivalent and isotonicity calculations.
  • Batch formulation: theoretical API, potency and overage corrections, target blend mass, non-API mass, and manufacturing yield.
Chemical EngineeringCollege / process engineering
  • Material balances, combined flow, mixed concentration, solute flow, and process mass yield.
  • Volumetric and mass flow, Reynolds number, Darcy pressure drop, and ideal pump shaft power.
  • Counter-current log-mean temperature difference, heat duty, CSTR volume, and first-order PFR residence time.
Nuclear EngineeringCollege / nuclear-science coursework
  • Decay constant, remaining and decayed nuclei, activity, and instantaneous decay power.
  • Binding energy and binding energy per nucleon; ideal fission thermal and electrical energy.
  • Ideal exponential attenuation, half- and tenth-value layers, inverse-square intensity, reaction rate, and simple reactivity calculations. These are simplified teaching models, not safety analyses.
AstrophysicsCollege / astronomy and astrophysics
  • Blackbody luminosity, observed flux, distance modulus, photometric distance, and Wien peak wavelength.
  • Circular orbital speed, orbital period, escape velocity, surface gravity, and Schwarzschild radius.
  • Redshift velocity, low-redshift Hubble-distance estimates, and approximate light-travel time. Precision cosmology needs a fuller model.
Theoretical MathematicsCollege / selected advanced topics
  • Greatest common divisor, least common multiple, modular exponentiation, and Euler totient.
  • Discrete-mathematics and mathematical-structure tools alongside supported exact symbolic commands.
  • Selected high-order derivatives, residues, exact series and integral families, and supported differential equations. Domain and syntax restrictions apply.
Pharmaceutical & Industrial QualityCollege / laboratory and manufacturing quality
  • Cp and Cpk process capability; availability, performance, quality, and overall equipment effectiveness.
  • Relative standard deviation, coefficient of variation, spike recovery, and bias.
  • Filter flux, throughput per area, log reduction, decimal-reduction time, and percent reduction.
Handyman & Gallery Wall PlanningEveryday / woodworking and trade
  • Woodworking cuts, kerf allowances, sheet goods, material estimates, and tape-measure fractions.
  • Picture spacing and mounting layouts with wall and object dimensions.
  • Visual gallery arrangements: rectangular, square, and circular objects, alignment guides, spacing, and height adjustments.

68 industry-specific packs.

From labor efficiency and inventory to optics and quantum-computing resource estimates. These are named calculations in the app—not a claim to replace specialized professional software.

Engineering

Electrical PowerCollege / professional · 5 named outputs
  • Real power
  • Apparent power
  • Reactive power
  • Voltage drop
  • Transformer secondary voltage
Controls & RoboticsCollege / professional · 5 named outputs
  • Proportional contribution
  • Integral contribution
  • Derivative contribution
  • PID command
  • Proportional-only closed-loop gain
Telecommunications & RFCollege / professional · 6 named outputs
  • Wavelength
  • Free-space path loss
  • Received power
  • Thermal noise floor
  • Ideal SNR
  • Shannon capacity
Petroleum EngineeringCollege / professional · 6 named outputs
  • Bulk rock volume
  • Pore volume
  • Hydrocarbon pore volume
  • Oil initially in place
  • Recoverable oil
  • Rate retained after one year
Mining & MineralsCollege / professional · 6 named outputs
  • Contained mineral
  • Recovered mineral
  • Concentrate mass
  • Tailings mass
  • Stripping ratio
  • Processing cost
Automotive EngineeringCollege / professional · 6 named outputs
  • Shaft power
  • Mechanical horsepower
  • Vehicle kinetic energy
  • Aerodynamic drag
  • Power to overcome drag
  • Vehicle momentum
Marine & NavalCollege / professional · 6 named outputs
  • Displacement
  • Buoyant force
  • Mass supported by volume
  • Displacement balance
  • Hull-speed estimate
  • Block coefficient
Renewable EnergyCollege / professional · 5 named outputs
  • Peak array output
  • Daily solar energy
  • Daily load energy
  • Daily energy balance
  • Battery autonomy
GIS & SurveyingCollege / professional · 6 named outputs
  • Surface distance
  • Initial bearing
  • Ground distance
  • Map distance
  • Grade
  • Slope distance
Fire Protection EngineeringCollege / professional · 5 named outputs
  • Single-head flow
  • Sprinkler flow estimate
  • Density-area demand
  • System demand with hose
  • Minimum pressure for density flow
Water & Wastewater TreatmentCollege / professional · 5 named outputs
  • Chemical feed
  • Detention time
  • Surface overflow rate
  • BOD removal
  • BOD removed
Semiconductor & MicroelectronicsCollege / professional · 5 named outputs
  • Diode current
  • Junction voltage ratio
  • MOS overdrive
  • Normalized saturation current
  • Normalized transconductance
Battery & Energy StorageCollege / professional · 6 named outputs
  • Pack nominal voltage
  • Pack capacity
  • Nominal stored energy
  • C-rate current
  • Ideal runtime
  • Cell count
Materials, Metallurgy & WeldingCollege / professional · 5 named outputs
  • Nominal stress
  • Yield factor of safety
  • Arc power
  • Weld heat input
  • Estimated 80% net heat
Transportation & Traffic EngineeringCollege / professional · 6 named outputs
  • Traffic flow
  • Traffic density
  • Reaction distance
  • Braking distance
  • Total stopping distance
  • Capacity utilization
Rail & Transit EngineeringCollege / professional · 5 named outputs
  • Power-limited tractive effort
  • Grade resistance
  • Net force after grade
  • Service braking distance
  • Mass per car
Acoustics & Audio EngineeringCollege / professional · 5 named outputs
  • Combined sound level
  • RMS sound pressure
  • Relative intensity
  • Sabine reverberation time
  • Time-based exposure dose
Laser & Photonics EngineeringCollege / professional · 6 named outputs
  • Photon energy
  • Photons per second
  • Pulse energy
  • Peak pulse power
  • Beam fluence
  • Diffraction divergence
Robotics KinematicsCollege / professional · 6 named outputs
  • End-effector X
  • End-effector Y
  • Radial reach
  • X velocity
  • Y velocity
  • Jacobian determinant
Drone & Autonomous Vehicle OperationsCollege / professional · 6 named outputs
  • Ideal endurance
  • Ideal range
  • Mission flight time
  • Mission energy required
  • Energy reserve after mission
  • Payload fraction

Science

Geology & GeophysicsCollege / professional · 6 named outputs
  • Bulk formation volume
  • Pore volume
  • Intrinsic permeability
  • Darcy volumetric flow
  • Darcy velocity
  • Pore velocity
Optics & PhotonicsCollege / professional · 6 named outputs
  • Image distance
  • Magnification
  • Rayleigh angular resolution
  • First diffraction angle
  • Light speed in medium
  • Photon energy
MeteorologyCollege / professional · 6 named outputs
  • Dew point
  • Humidex
  • Wind-chill estimate
  • Sea-level pressure
  • Standard lapse adjustment
  • Cloud-base estimate

Life Sciences

Biomedical EngineeringCollege / professional · 5 named outputs
  • Poiseuille resistance
  • Predicted laminar flow
  • Measured mean velocity
  • Wall shear stress
  • Reynolds number
Clinical & NursingCollege / professional · 6 named outputs
  • Weight-based maximum
  • Maximum daily dose
  • Maximum per dose
  • Ordered daily total
  • Maximum used
  • Volume per ordered dose
Epidemiology & Public HealthCollege / professional · 6 named outputs
  • Exposed risk
  • Unexposed risk
  • Relative risk
  • Odds ratio
  • Attributable risk
  • Incidence rate
Veterinary MedicineCollege / professional · 6 named outputs
  • Drug amount
  • Liquid dose volume
  • Maintenance fluid volume
  • Fluid rate
  • Resting energy requirement
  • Tablets per dose
DentistryCollege / professional · 5 named outputs
  • Weight-based maximum
  • Maximum permitted amount
  • Maximum whole cartridges
  • Cartridge utilization
  • Restoration material volume
Medical Imaging & RadiologyCollege / professional · 5 named outputs
  • Dose-length product
  • Estimated effective dose
  • Ultrasound wavelength
  • MRI Larmor frequency
  • Field-related proton energy
Nutrition & DieteticsCollege / professional · 5 named outputs
  • Body mass index
  • Mifflin-St Jeor BMR
  • Estimated daily expenditure
  • Protein target
  • Protein calories
Sports Science & BiomechanicsCollege / professional · 6 named outputs
  • Mechanical work
  • Average power
  • Impulse
  • Impulse velocity change
  • Jump potential energy
  • Ideal takeoff velocity
Genetics & BiostatisticsCollege / professional · 6 named outputs
  • Expected AA genotype
  • Expected heterozygotes
  • Expected aa genotype
  • Expected recombinants
  • Broad-sense heritability
  • Allele copies after sampling
Toxicology & Industrial HygieneCollege / professional · 5 named outputs
  • Eight-hour TWA
  • Inhaled mass
  • Body-weight dose
  • Hazard quotient
  • Approximate ppm at 25°C
Laboratory Medicine & DiagnosticsCollege / professional · 6 named outputs
  • Sensitivity
  • Specificity
  • Positive predictive value
  • Negative predictive value
  • Diagnostic accuracy
  • Dilution-corrected analyte

Home & Trade

Architecture & ConstructionCollege / professional · 6 named outputs
  • Plan area
  • Perimeter
  • Base material volume
  • Material with waste
  • Estimated material cost
  • Perimeter framing count
Architecture & Building DesignCollege / professional · 6 named outputs
  • Floor-area ratio
  • Estimated occupant load
  • Required ramp run
  • Roof rise at 6:12
  • Nominal 7-inch risers
  • Area per occupant

Industry

Manufacturing & MachiningCollege / professional · 6 named outputs
  • Cutting speed
  • Linear feed rate
  • Ideal cutting time
  • Taylor tool life
  • Surface travel per second
  • Turns over cut
AgricultureCollege / professional · 6 named outputs
  • Seeds required
  • Expected viable plants
  • Fertilizer required
  • Irrigation water
  • Expected production
  • Yield per viable plant
Food EngineeringCollege / professional · 6 named outputs
  • Ingredient quantity
  • Initial dry solids
  • Final product mass
  • Water removed
  • Six-log process time
  • Relative thermal lethality
Reliability & MaintenanceCollege / professional · 5 named outputs
  • Inherent availability
  • Failure rate
  • Mission reliability
  • Expected fleet failures
  • Planned availability
Packaging EngineeringCollege / professional · 6 named outputs
  • Package volume
  • Domestic dimensional weight
  • Package surface area
  • Palletized package volume
  • Compression safety factor
  • Load utilization

Business

Actuarial & InsuranceCollege / professional · 6 named outputs
  • Expected undiscounted loss
  • Present value of expected loss
  • Loaded indicated premium
  • Expected portfolio claims
  • Expected portfolio payout
  • Portfolio payout SD
Economics & AccountingCollege / professional · 6 named outputs
  • Contribution margin
  • Contribution margin ratio
  • Break-even volume
  • Operating profit
  • Estimated demand change
  • Estimated new revenue
Operations ResearchCollege / professional · 6 named outputs
  • Server utilization
  • Jobs in system M/M/1
  • Time in system
  • Economic order quantity
  • Average cycle inventory
  • Lead-time demand
Project ManagementCollege / professional · 7 named outputs
  • PERT expected duration
  • PERT standard deviation
  • PERT variance
  • Cost performance index
  • Schedule performance index
  • Cost variance
  • Schedule variance
Healthcare Staffing & OperationsCollege / professional · 5 named outputs
  • Bed occupancy
  • Patient days
  • Nursing hours per patient day
  • Required FTE
  • Workload per census patient
Quantitative Finance & DerivativesCollege / professional · 6 named outputs
  • Black-Scholes d1
  • Black-Scholes d2
  • European call value
  • European put value
  • Forward price
  • Call delta
Banking & Credit RiskCollege / professional · 6 named outputs
  • Monthly payment
  • Loan-to-value
  • Expected credit loss
  • Expected retained exposure
  • Total scheduled payments
  • Scheduled interest
Real Estate & Mortgage AnalysisCollege / professional · 6 named outputs
  • Loan amount
  • Monthly principal and interest
  • Annual net operating income
  • Capitalization rate
  • Annual cash flow before tax
  • Debt-service coverage ratio
Tax & Corporate AccountingCollege / professional · 6 named outputs
  • Gross profit
  • EBITDA
  • Operating income
  • Estimated income tax
  • Net operating income
  • Return on assets
Retail & E-commerceCollege / professional · 6 named outputs
  • Conversion rate
  • Average order value
  • Gross margin
  • Return on ad spend
  • Customer acquisition cost
  • Contribution after ads
Hospitality & Restaurant OperationsCollege / professional · 6 named outputs
  • Expected covers
  • Period revenue
  • Food cost percentage
  • Labor cost percentage
  • Prime cost percentage
  • Operating contribution
Workforce PlanningCollege / professional · 6 named outputs
  • Productive hours per FTE
  • Required staffing
  • Staffing gap
  • Current gross capacity
  • Annual base labor cost
  • Workload utilization
Labor & Man-Hour EfficiencyCollege / professional · 9 named outputs
  • Quality yield
  • Earned standard hours
  • Labor efficiency
  • Labor utilization
  • Overall labor effectiveness
  • Good units per direct labor hour
  • Direct labor hours per good unit
  • Labor cost per good unit
  • Paid-hour gap
Operational Capacity & StaffingCollege / professional · 9 named outputs
  • Productive hours per FTE
  • Net labor capacity
  • Theoretical unit capacity
  • Demand capacity utilization
  • Schedule attainment
  • Observed throughput
  • Required staffing
  • Staffing gap
  • Remaining unit capacity
Business KPI DashboardCollege / professional · 8 named outputs
  • Gross profit
  • Gross margin
  • Operating profit
  • Operating margin
  • Revenue per employee
  • Operating profit per employee
  • Labor cost percentage
  • Asset turnover
Marketing AnalyticsCollege / professional · 6 named outputs
  • Click-through rate
  • Click conversion rate
  • Cost per click
  • Cost per acquisition
  • Return on ad spend
  • Customer acquisition cost

STEM

Data Science & MLCollege / professional · 6 named outputs
  • Accuracy
  • Precision
  • Recall / sensitivity
  • Specificity
  • F1 score
  • Gradient update step

Supply Chain

Maritime Shipping & PortsCollege / professional · 6 named outputs
  • Slot utilization
  • Voyage duration
  • Voyage fuel
  • Voyage fuel cost
  • Unused slots
  • TEU-nautical miles
Warehousing & DistributionCollege / professional · 6 named outputs
  • Storage occupancy
  • Available pallet positions
  • Lines per order
  • Order throughput
  • Line throughput
  • Labor productivity
Procurement & Supplier PerformanceCollege / professional · 6 named outputs
  • Purchase savings
  • New projected spend
  • Defect rate
  • Accepted yield
  • On-time delivery
  • Spend per received unit

Technology

Cybersecurity & CryptographyCollege / professional · 5 named outputs
  • Password entropy
  • Keyspace
  • Average brute-force time
  • Single loss expectancy
  • Annual loss expectancy
Computer Graphics & Game DevelopmentCollege / professional · 6 named outputs
  • Pixels per frame
  • Aspect ratio
  • Framebuffer size
  • Raw pixel bandwidth
  • Triangles per second
  • Vertex operations per second
AI Model EngineeringCollege / professional · 5 named outputs
  • Model weight size
  • Approximate training compute
  • Training duration
  • Inference response time
  • Parameters per training token
Cloud & Data-center CapacityCollege / professional · 6 named outputs
  • Average concurrency
  • Minimum instances
  • Provisioned utilization
  • Daily request volume
  • Facility power
  • Daily facility energy
Networking & Distributed SystemsCollege / professional · 6 named outputs
  • Packet transmission time
  • Bandwidth-delay product
  • One-way fiber propagation
  • Goodput estimate
  • Link utilization
  • Packets per second at line rate
Quantum ComputingCollege / professional · 6 named outputs
  • State-vector amplitudes
  • Double-complex memory
  • No-error circuit probability
  • Total gate executions
  • Single-shot circuit duration
  • Qubit transition energy
Remote SensingCollege / professional · 6 named outputs
  • Pixels across swath
  • Pixels along scene
  • Pixels per band
  • Uncompressed scene size
  • Compressed scene size
  • Ground area
COMING TO IOS

Calculator Plus is on the way.

We are still being picky about the final details. Explore the apps you can use today while we finish this one.

Explore available apps →
KEEP EXPLORING

More things we wished existed.

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Super Dad

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Meme Maker Easy

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Tip Calculator Easy

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