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Fast calculators and practical online tools for money, images, code, construction, conversions, science, engineering, numerical methods, geometry, math and everyday problems — with formulas, examples and limitations explained.
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Browse all tools ↓Mortgage Payment Calculator
Estimate principal, interest, taxes, insurance and HOA for a home purchase.
Open tool →Developer ToolsJSON Formatter & Validator
Format, validate and inspect JSON with readable indentation and instant syntax errors.
Open tool →Construction & HomeConcrete Calculator
Estimate cubic yards, bag counts and ready-mix material cost for a rectangular slab or pour.
Open tool →Time, Work & PayPaycheck Calculator — 2026 Estimate
Estimate per-paycheck net pay using 2026 federal brackets, standard deduction, FICA and a user-entered state/local rate.
Open tool →ConvertersCurrency Converter
Convert currencies using current reference exchange rates with the rate date shown.
Open tool →Text & WritingWord Unscrambler & Anagram Solver
Unscramble letters into valid English words, find exact anagrams, use wildcard tiles and filter by length or letter pattern.
Open tool →Numerical Methods & Scientific ComputingRunge–Kutta RK4 Calculator
Solve first-order ODEs with classical fourth-order Runge–Kutta and compare with an exact solution when available.
Open tool →Image ToolsImage Compressor
Reduce image file size in your browser with adjustable quality and optional downscaling.
Open tool →A working tool and enough context to trust the math.
CrunchAnything is built around the answer first. Each calculator runs immediately in the browser, then explains the formula, gives a worked example, states important limitations and links to related utilities.
No account, email gate or download required.
Formulas and examples sit beside the interactive utility.
Financial and engineering tools call out assumptions that matter.
Options Profit Calculator
Model up to eight option legs with chain import, Greeks, price × date heatmaps and expiration P/L overlays.
Open tool →Finance & OptionsCovered Call Calculator
Calculate premium income, breakeven, max profit and return if called away.
Open tool →Finance & OptionsCash-Secured Put Calculator
Estimate put premium, breakeven, secured cash and return on secured capital.
Open tool →Finance & OptionsVertical Spread Calculator
Calculate debit or credit, max profit, max loss and breakeven for vertical spreads.
Open tool →Finance & OptionsIron Condor Calculator
Estimate max profit, max loss and breakevens for a four-leg iron condor.
Open tool →Finance & OptionsCompound Interest Calculator
Project account growth with starting capital, monthly contributions and annual return.
Open tool →Finance & OptionsLoan Payment Calculator
Calculate monthly payment, total interest and total repayment for an amortizing loan.
Open tool →Finance & OptionsMortgage Payment Calculator
Estimate principal, interest, taxes, insurance and HOA for a home purchase.
Open tool →Electrical EngineeringThree-Phase Current Calculator
Convert three-phase kW, voltage, power factor and efficiency into line current.
Open tool →Electrical EngineeringVoltage Drop Calculator
Estimate conductor voltage drop using current, length, conductor size and material.
Open tool →Electrical EngineeringTransformer Current Calculator
Convert transformer kVA and voltage into primary and secondary full-load current.
Open tool →Electrical EngineeringTransformer Short-Circuit Current Calculator
Estimate transformer secondary bolted fault current from kVA, voltage and percent impedance.
Open tool →Electrical EngineeringPower Factor Correction Calculator
Estimate capacitor kVAR required to improve power factor at a given kW load.
Open tool →Electrical EngineeringkW, kVA & Amps Calculator
Convert kW into kVA and current for single-phase or three-phase AC systems.
Open tool →Math & EverydayPercentage Calculator
Calculate percentages, ratios and percentage-based increases or decreases.
Open tool →Math & EverydayPercentage Change Calculator
Calculate percentage increase or decrease from an old value to a new value.
Open tool →Math & EverydayTip Calculator
Split a bill, calculate a tip and show the per-person total.
Open tool →Math & EverydayDate Difference Calculator
Find the number of days and weeks between two calendar dates.
Open tool →Text & WritingWord Counter
Count words, characters, sentences and estimated reading time instantly.
Open tool →Text & WritingWord Scrambler
Randomize letters to create multiple scrambled versions of a word or phrase.
Open tool →Finance & OptionsWheel Strategy Calculator
Estimate premium income, assignment basis, called-away profit and return for one wheel cycle.
Open tool →Finance & OptionsOption Premium Yield Calculator
Convert option premium into return on collateral and a simple annualized yield estimate.
Open tool →Finance & OptionsAnnualized Return Calculator
Convert a start value, end value and holding period into total and annualized return.
Open tool →Finance & OptionsCAGR Calculator
Calculate compound annual growth rate from beginning value, ending value and years.
Open tool →Finance & OptionsROI Calculator
Calculate profit, return on investment and break-even proceeds from cost and proceeds.
Open tool →Finance & OptionsPosition Size Calculator
Estimate shares or units from account size, risk percentage, entry price and stop price.
Open tool →Finance & OptionsSavings Goal Calculator
Estimate how long it may take to reach a savings target with recurring contributions and growth.
Open tool →Finance & OptionsDebt Payoff Calculator
Estimate months to payoff and total interest from balance, APR and monthly payment.
Open tool →Electrical EngineeringMotor Current Calculator
Estimate AC motor line current from horsepower, voltage, efficiency, power factor and phase.
Open tool →Electrical EngineeringGenerator Current Calculator
Convert generator kVA and voltage into approximate full-load current for single- or three-phase systems.
Open tool →Electrical EngineeringOhm's Law Calculator
Calculate current and power from voltage and resistance using Ohm's law.
Open tool →Electrical EngineeringCapacitor kVAR Calculator
Estimate per-phase capacitance from kVAR, voltage, frequency and wye or delta connection.
Open tool →Electrical EngineeringDC Voltage Drop Calculator
Estimate two-wire DC voltage drop from current, one-way length and conductor resistance.
Open tool →Electrical EngineeringBattery Runtime Calculator
Estimate battery runtime from voltage, amp-hours, load, usable depth and conversion efficiency.
Open tool →Math & EverydayRatio Calculator
Simplify a ratio and scale both sides to a target value.
Open tool →Math & EverydayFraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
Open tool →Math & EverydayAverage Calculator
Find mean, median, minimum, maximum, sum and count from a list of numbers.
Open tool →Math & EverydayAge Calculator
Calculate age in years, months and days between a birth date and a selected date.
Open tool →Text & WritingCharacter Counter
Count characters, characters without spaces, words, lines and UTF-8 bytes.
Open tool →Text & WritingCase Converter
Convert text to uppercase, lowercase, title case or sentence case and copy the result.
Open tool →ConvertersUnit Converter
Convert length, mass, temperature, volume, area, speed, pressure, energy, power and more.
Open tool →ConvertersCurrency Converter
Convert currencies using current reference exchange rates with the rate date shown.
Open tool →ConvertersLength Converter
Convert millimeters, centimeters, meters, kilometers, inches, feet, yards and miles.
Open tool →ConvertersWeight & Mass Converter
Convert kilograms, grams, pounds, ounces, stone and metric or U.S. tons.
Open tool →ConvertersTemperature Converter
Convert Celsius, Fahrenheit, Kelvin and Rankine temperatures.
Open tool →ConvertersVolume Converter
Convert liters, milliliters, cups, fluid ounces, pints, quarts, gallons and cubic units.
Open tool →ConvertersArea Converter
Convert square feet, square meters, acres, hectares, square miles and other area units.
Open tool →ConvertersSpeed Converter
Convert mph, km/h, meters per second, knots and feet per second.
Open tool →ConvertersPressure Converter
Convert psi, bar, kPa, MPa, atmospheres, mmHg and inHg.
Open tool →ConvertersData Storage Converter
Convert bits, bytes, KB, MB, GB, TB and binary KiB, MiB, GiB and TiB.
Open tool →Math & EverydayTime Calculator
Add or subtract hours, minutes and seconds and normalize the result.
Open tool →Math & EverydayTime Card Calculator
Calculate weekly work hours, breaks, overtime and estimated gross pay.
Open tool →Finance & OptionsAuto Loan Calculator
Estimate car payment, amount financed and total interest from price, down payment, trade and APR.
Open tool →Finance & OptionsAmortization Calculator
Calculate payment, total interest, payoff time and an amortization schedule with optional extra payments.
Open tool →Math & EverydayScientific Calculator
Evaluate scientific expressions with trig, logs, powers, roots, constants and parentheses.
Open tool →Math & EverydayGPA Calculator
Calculate an unweighted 4.0 GPA from letter grades and course credit hours.
Open tool →Finance & OptionsRetirement Calculator
Project retirement savings from current balance, contributions, return and inflation assumptions.
Open tool →Finance & OptionsInvestment Calculator
Project investment growth with initial capital, monthly additions, return, years and compounding frequency.
Open tool →Math & EverydayDecimal to Fraction Calculator
Convert a decimal to a simplified fraction with a configurable maximum denominator.
Open tool →Math & EverydaySquare Footage Calculator
Calculate square footage from length, width, quantity and optional waste or overage.
Open tool →Text & WritingWord Unscrambler & Anagram Solver
Unscramble letters into valid English words, find exact anagrams, use wildcard tiles and filter by length or letter pattern.
Open tool →Numerical Methods & Scientific ComputingODE Solver
Solve first-order initial-value ODEs with Euler, Heun, midpoint, RK4, adaptive RK45, GL4 or implicit Euler.
Open tool →Numerical Methods & Scientific ComputingEuler Method Calculator
Step through a first-order ODE with Euler’s method, graph the trajectory and compare against an optional exact solution.
Open tool →Numerical Methods & Scientific ComputingImproved Euler / Heun Method Calculator
Solve a first-order ODE with Heun’s predictor-corrector method and inspect second-order accuracy.
Open tool →Numerical Methods & Scientific ComputingMidpoint Method Calculator
Solve first-order ODEs with the explicit midpoint RK2 method and visualize the numerical trajectory.
Open tool →Numerical Methods & Scientific ComputingRunge–Kutta RK4 Calculator
Solve first-order ODEs with classical fourth-order Runge–Kutta and compare with an exact solution when available.
Open tool →Numerical Methods & Scientific ComputingAdaptive RK45 ODE Solver
Integrate an ODE with adaptive Dormand–Prince RK45 error control and automatic step-size adjustment.
Open tool →Numerical Methods & Scientific ComputingGauss–Legendre GL4 ODE Solver
Solve first-order ODEs with the implicit two-stage fourth-order Gauss–Legendre Runge–Kutta method.
Open tool →Numerical Methods & Scientific ComputingImplicit Euler ODE Solver
Solve scalar first-order ODEs with backward Euler and a Newton iteration at every step.
Open tool →Numerical Methods & Scientific ComputingNumerical Integration Calculator
Approximate definite integrals with trapezoidal, composite Simpson and 4-point Gauss–Legendre quadrature.
Open tool →Numerical Methods & Scientific ComputingFinite Difference Derivative Calculator
Estimate first and second derivatives with forward, backward, central and Richardson-extrapolated finite differences.
Open tool →Numerical Methods & Scientific ComputingCFL & Diffusion Stability Calculator
Check Courant/CFL and Fourier-number stability limits for common explicit advection, wave and diffusion schemes.
Open tool →Numerical Methods & Scientific ComputingPDE Solver
Explore common finite-difference PDE models for heat, wave, advection, Poisson, Laplace and reaction–diffusion equations.
Open tool →Numerical Methods & Scientific Computing1-D Heat Equation Solver
Solve uₜ=αuₓₓ with an explicit FTCS finite-difference scheme and visualize diffusion through time.
Open tool →Numerical Methods & Scientific ComputingCrank–Nicolson Heat Equation Solver
Solve the 1-D heat equation with the implicit second-order Crank–Nicolson method and a tridiagonal solve each step.
Open tool →Numerical Methods & Scientific Computing1-D Wave Equation Solver
Solve uₜₜ=c²uₓₓ with a centered explicit finite-difference scheme and track wave motion through time.
Open tool →Numerical Methods & Scientific Computing1-D Advection Equation Solver
Solve uₜ+vuₓ=0 with a first-order upwind scheme on a periodic domain and monitor the CFL number.
Open tool →Numerical Methods & Scientific Computing1-D Poisson Equation Solver
Solve −u″=f(x) with second-order finite differences and zero Dirichlet boundary conditions.
Open tool →Numerical Methods & Scientific Computing2-D Laplace Equation Solver
Solve ∇²u=0 on a square grid with finite differences and Gauss–Seidel relaxation, then view the field as a heatmap.
Open tool →Numerical Methods & Scientific ComputingReaction–Diffusion Solver
Simulate the Fisher–KPP reaction–diffusion equation uₜ=D uₓₓ+r u(1−u) on a 1-D grid.
Open tool →Numerical Methods & Scientific ComputingMethod of Lines PDE Solver
Discretize the 1-D heat equation in space, then integrate the resulting ODE system with classical RK4.
Open tool →Developer ToolsJSON Formatter & Validator
Format, validate and inspect JSON with readable indentation and instant syntax errors.
Open tool →Developer ToolsJSON Minifier
Remove insignificant whitespace from valid JSON and verify the input before using the compact result.
Open tool →Developer ToolsJSON ↔ CSV Converter
Convert arrays of JSON objects to CSV or turn a CSV table into JSON records.
Open tool →Developer ToolsYAML ↔ JSON Converter
Convert YAML documents to JSON and JSON objects back to readable YAML.
Open tool →Developer ToolsBase64 Encoder / Decoder
Encode UTF-8 text as Base64 or decode Base64 back into readable text.
Open tool →Developer ToolsURL Encoder / Decoder
Percent-encode URL components or decode percent-encoded text for links, queries and API work.
Open tool →Developer ToolsRegex Tester
Test a JavaScript regular expression against text and inspect matches, indexes and capture groups.
Open tool →Developer ToolsJWT Decoder
Decode JWT header and payload claims, inspect expiration and read the token without verifying its signature.
Open tool →Developer ToolsUUID Generator
Generate one or many cryptographically random UUID version 4 identifiers in the browser.
Open tool →Developer ToolsHash Generator
Calculate SHA-256, SHA-384, SHA-512 or SHA-1 digests from text using the browser crypto API.
Open tool →Developer ToolsPassword Generator
Generate random passwords with configurable length, character sets and optional ambiguous-character removal.
Open tool →Developer ToolsQR Code Generator
Create a downloadable QR code for a URL or text with adjustable size, margin and error correction.
Open tool →Developer ToolsUnix Timestamp Converter
Convert Unix seconds or milliseconds to dates and turn local date/time input into a Unix timestamp.
Open tool →Developer ToolsIP Subnet Calculator
Calculate IPv4 network, subnet mask, broadcast, host range, wildcard mask and address count from CIDR.
Open tool →Developer ToolsColor Converter — HEX, RGB, HSL & CMYK
Convert a HEX color into RGB, HSL and approximate CMYK values with a live color preview.
Open tool →Time, Work & PayBusiness Days Calculator
Count weekdays between two dates and optionally exclude custom holiday dates.
Open tool →Time, Work & PayDate Add / Subtract Calculator
Add or subtract days, weeks, months or years from a calendar date.
Open tool →Time, Work & PayTime Zone Converter
Convert a wall-clock date and time between common IANA time zones with daylight-saving rules.
Open tool →Time, Work & PayHours Worked Calculator
Calculate elapsed work hours from clock-in, clock-out and an unpaid break, including overnight shifts.
Open tool →Time, Work & PayOvertime Pay Calculator
Split regular and overtime hours and estimate gross pay with a configurable overtime threshold and multiplier.
Open tool →Time, Work & PaySalary ↔ Hourly Calculator
Convert annual salary into hourly, weekly, monthly and daily equivalents from your work schedule.
Open tool →Time, Work & PayPay Raise Calculator
Calculate new salary, annual increase, monthly increase and percent change from a raise.
Open tool →Time, Work & PayPaycheck Calculator — 2026 Estimate
Estimate per-paycheck net pay using 2026 federal brackets, standard deduction, FICA and a user-entered state/local rate.
Open tool →Time, Work & PayTake-Home Pay Calculator — 2026 Estimate
Estimate annual net pay after pretax deductions, 2026 federal income tax, FICA and a state/local rate.
Open tool →Time, Work & PayWork Hours Decimal Converter
Convert hours and minutes to decimal hours or convert decimal hours back to hours:minutes.
Open tool →Construction & HomeConcrete Calculator
Estimate cubic yards, bag counts and ready-mix material cost for a rectangular slab or pour.
Open tool →Construction & HomeCubic Yard Calculator
Convert rectangular length, width and depth into cubic yards, cubic feet and cubic meters.
Open tool →Construction & HomeGravel Calculator
Estimate gravel cubic yards, tons and material cost from area, depth and supplier density.
Open tool →Construction & HomeMulch Calculator
Estimate bulk cubic yards and bag count from bed area, mulch depth, overage and bag size.
Open tool →Construction & HomePaint Calculator
Estimate paintable wall/ceiling area and gallons from room dimensions, openings, coats and coverage.
Open tool →Construction & HomeFlooring Calculator
Calculate floor area, waste allowance, boxes and material cost from coverage per box.
Open tool →Construction & HomeTile Calculator
Estimate tile pieces and boxes from surface area, tile dimensions, waste and tiles per box.
Open tool →Construction & HomeDrywall Calculator
Estimate drywall sheet count for room walls and an optional ceiling with configurable sheet size and waste.
Open tool →Construction & HomeRoofing Calculator
Estimate pitched-roof area, roofing squares and shingle bundles from plan dimensions and roof pitch.
Open tool →Construction & HomeRoof Pitch Calculator
Convert roof rise and run into pitch ratio, angle, slope percent and slope factor.
Open tool →Construction & HomeStair Calculator
Estimate riser count, actual riser height, treads, total run, stair angle and stringer slope length.
Open tool →Construction & HomeBoard Foot Calculator
Calculate board feet and material cost from lumber thickness, width, length and quantity.
Open tool →Construction & HomeFence Calculator
Estimate fence sections, posts and pickets from perimeter, spacing, gates and waste allowance.
Open tool →Construction & HomeDeck Material Calculator
Estimate deck area, board rows, decking linear feet, board count and approximate joist count.
Open tool →Construction & HomeAsphalt Calculator
Estimate hot-mix asphalt tons and material cost from paved area, compacted thickness and mix density.
Open tool →Statistics & AlgebraStandard Deviation Calculator
Calculate sample and population standard deviation, variance, mean and median from a list of numbers.
Open tool →Statistics & AlgebraStatistics Calculator
Calculate count, sum, mean, median, mode, range, variance and standard deviation from a dataset.
Open tool →Statistics & AlgebraQuadratic Equation Solver
Solve ax² + bx + c = 0 for real or complex roots and calculate the parabola vertex.
Open tool →Statistics & AlgebraMatrix Calculator — 2×2
Calculate determinant, trace, inverse and A×B product for two 2×2 matrices.
Open tool →Statistics & AlgebraLinear Equation Solver — 2 Variables
Solve two simultaneous linear equations in x and y using a 2×2 coefficient system.
Open tool →Statistics & AlgebraProbability Calculator
Calculate union, conditional probabilities and an independence benchmark from P(A), P(B) and P(A∩B).
Open tool →Statistics & AlgebraCombination & Permutation Calculator
Calculate nCr combinations, nPr permutations and n factorial for counting problems.
Open tool →Statistics & AlgebraZ-Score Calculator
Calculate how many standard deviations a value lies above or below a mean.
Open tool →Statistics & AlgebraNormal Distribution Calculator
Calculate normal-distribution z-score, cumulative probability, upper-tail probability and density.
Open tool →Statistics & AlgebraConfidence Interval Calculator
Estimate a z-based confidence interval for a mean from sample mean, standard deviation and sample size.
Open tool →Image ToolsImage Compressor
Reduce image file size in your browser with adjustable quality and optional downscaling.
Open tool →Image ToolsImage Resizer
Resize an image to exact pixel dimensions while optionally preserving the original aspect ratio.
Open tool →Image ToolsImage Cropper
Crop an image by pixel coordinates and dimensions, then download the selected region.
Open tool →Image ToolsImage Format Converter
Convert browser-readable images between PNG, JPEG and WebP formats.
Open tool →Image ToolsImage Dimensions & File Inspector
Inspect image pixel dimensions, megapixels, aspect ratio, MIME type and local file size.
Open tool →Image ToolsImage DPI & Print Size Calculator
Relate image pixel dimensions to print size and effective DPI.
Open tool →Image ToolsImage Color Picker
Click a pixel in an uploaded image to read its HEX and RGB color.
Open tool →Image ToolsFavicon Generator
Create a square 64×64 PNG favicon from the center of an uploaded image.
Open tool →Image ToolsRotate & Flip Image
Rotate an image by 90-degree steps and flip it horizontally or vertically.
Open tool →Image ToolsImage Watermark Tool
Add a configurable text watermark to an image and download the result.
Open tool →Developer ToolsXML Formatter & Validator
Validate XML syntax and format nested elements with readable indentation.
Open tool →Developer ToolsSQL Formatter
Add readable line breaks and keyword casing to common SQL statements.
Open tool →Developer ToolsHTML Formatter
Indent compact HTML markup for easier reading and debugging.
Open tool →Developer ToolsCSS Minifier
Remove comments and unnecessary whitespace from CSS text.
Open tool →Developer ToolsJavaScript Minifier — Lightweight
Remove basic comments and whitespace from simple JavaScript snippets.
Open tool →Developer ToolsMarkdown Previewer
Preview common Markdown headings, emphasis, code and lists directly in the browser.
Open tool →Developer ToolsText Diff Checker
Compare two blocks of text and highlight added, removed and unchanged lines.
Open tool →Developer ToolsCSV Viewer & Sorter
Parse comma-separated data into a table and sort rows by any detected column.
Open tool →Developer ToolsNumber Base Converter
Convert integers between binary, octal, decimal and hexadecimal notation.
Open tool →Developer ToolsCron Expression Explainer
Break down a standard five-field cron expression into human-readable field meanings.
Open tool →Science & EngineeringReynolds Number Calculator
Calculate Reynolds number and a basic pipe-flow regime classification.
Open tool →Science & EngineeringMach Number Calculator
Calculate Mach number from object or flow speed and local speed of sound.
Open tool →Science & EngineeringBernoulli Equation Calculator
Estimate downstream pressure from velocity and elevation changes in ideal incompressible flow.
Open tool →Science & EngineeringPump Power Calculator
Estimate hydraulic and shaft power from flow rate, head, density and pump efficiency.
Open tool →Science & EngineeringRLC Resonance Calculator
Calculate series RLC resonant frequency, Q factor and approximate bandwidth.
Open tool →Science & EngineeringIdeal Gas Law Calculator
Calculate gas pressure from moles, absolute temperature and volume.
Open tool →Science & EngineeringProjectile Motion Calculator
Calculate ideal flight time, horizontal range and maximum height for a launched projectile.
Open tool →Science & EngineeringMolarity Calculator
Calculate moles and molarity from solute mass, molar mass and solution volume.
Open tool →Science & EngineeringpH Calculator
Convert hydrogen-ion concentration to pH and estimate pOH under a 25°C water assumption.
Open tool →Science & EngineeringKinetic & Potential Energy Calculator
Calculate kinetic energy, gravitational potential energy and their simple mechanical total.
Open tool →Business & EverydayDiscount Calculator
Calculate final price, savings and effective discount for one or two sequential discounts.
Open tool →Business & EverydaySales Tax Calculator
Add a percentage sales tax to price and quantity to calculate tax and total.
Open tool →Business & EverydayMarkup Calculator
Convert a markup on cost into selling price, gross profit and equivalent margin.
Open tool →Business & EverydayProfit Margin Calculator
Calculate profit, profit margin and cost ratio from revenue and total cost.
Open tool →Business & EverydayFuel Cost Calculator
Estimate gallons, trip fuel cost and cost per mile from distance, MPG and fuel price.
Open tool →Business & EverydayFuel Economy Calculator
Calculate MPG, L/100 km and km/L from distance driven and fuel consumed.
Open tool →Business & EverydayWeighted Grade Calculator
Calculate a weighted course grade from score percentages and matching weights.
Open tool →Business & EverydayUnit Price Comparison
Compare two package prices on a per-unit basis and identify the better value.
Open tool →Business & EverydayBreak-Even Calculator
Calculate contribution margin, break-even units and break-even revenue.
Open tool →Business & EverydayRandom Number Generator
Generate one or many random integers within a range, with optional uniqueness.
Open tool →Geometry & MeasurementCircle Calculator
Calculate circle diameter, circumference and area from radius.
Open tool →Geometry & MeasurementTriangle Calculator — Sides, Area & Angles
Validate three side lengths and calculate perimeter, Heron area and all three angles.
Open tool →Geometry & MeasurementDistance Between Two Points Calculator
Calculate Δx, Δy and straight-line distance between two Cartesian points.
Open tool →Geometry & MeasurementSlope Calculator
Calculate slope, rise/run and line equation through two points.
Open tool →Geometry & MeasurementMidpoint Calculator
Find the midpoint and segment length between two Cartesian points.
Open tool →Geometry & MeasurementCylinder Volume & Surface Area Calculator
Calculate cylinder volume, lateral area and total surface area.
Open tool →Geometry & MeasurementSphere Volume & Surface Area Calculator
Calculate sphere diameter, surface area and volume from radius.
Open tool →Geometry & MeasurementRectangular Prism Calculator
Calculate box volume, surface area and space diagonal.
Open tool →Geometry & MeasurementEllipse Calculator
Calculate ellipse area, approximate perimeter, focal distance and eccentricity.
Open tool →Tools first. Explanations included.
Every CrunchAnything page pairs a working utility with formulas, examples, limitations and related tools. We avoid hiding the answer behind an account, newsletter gate or paywall.
Financial and engineering calculators are educational estimates. For decisions involving money, safety, codes or professional practice, verify results against authoritative sources and project-specific requirements.