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The most useful and popular calculators appear first. Every tool is shown once, followed by research, technical and specialist tools.
Arithmetic, powers, roots and trigonometric functions.
Use now →02Math & sciencePercentage calculatorFind any percentage of a number instantly.
Use now →03Health & everydayAge calculatorCalculate exact age in years, months and days.
Use now →04Math & scienceLength converterConvert metric and imperial length measurements.
Use now →05Health & everydayDate differenceCount days and weeks between two dates.
Use now →06Health & everydayBMI calculatorEstimate body mass index from height and weight.
Use now →07Finance & businessLoan paymentEstimate monthly payments and total interest.
Use now →08Finance & businessCompound interestProject growth with compounding over time.
Use now →09Research & statisticsMean, median & modeSummarize a numerical dataset quickly.
Use now →10Research & statisticsStandard deviationCalculate sample and population deviation.
Use now →11Research & statisticsSample sizeEstimate survey sample size by confidence and margin.
Use now →12Math & scienceFraction calculatorAdd, subtract, multiply and simplify fractions.
Use now →13Math & scienceGeometry calculatorArea, perimeter and volume for common shapes.
Use now →14Math & scienceAlgebra solverSolve and explain common algebraic equations.
Use now →15Math & scienceQuadratic equationFind roots, discriminant and vertex information.
Use now →16Math & scienceRandom number generatorGenerate numbers within a custom range.
Use now →17Research & statisticsConfidence intervalEstimate a population range from sample results.
Use now →18Research & statisticsMargin of errorCalculate survey precision from sample data.
Use now →19Research & statisticsCorrelation coefficientMeasure the strength of a linear relationship.
Use now →20Research & statisticsT-test calculatorCompare means and calculate a t statistic.
Use now →21Research & statisticsANOVA calculatorCompare the means of multiple groups.
Use now →22Research & statisticsLinear regressionFit a line and inspect its slope and intercept.
Use now →23Engineering & technicalFree-space path lossCalculate radio propagation loss from frequency and distance.
Use now →24Engineering & technicalIPv4 subnetCalculate addresses and usable hosts from a CIDR prefix.
Use now →25Engineering & technicalDownload timeEstimate transfer time from file size and link speed.
Use now →26Engineering & technicalOhm’s lawCalculate voltage, current or resistance.
Use now →27Engineering & technicaldBm and wattsConvert RF power between dBm, mW and watts.
Use now →28Engineering & technicalAntenna wavelengthCalculate wavelength and common antenna lengths.
Use now →29Engineering & technicalRF link budgetEstimate received power across a wireless link.
Use now →30Engineering & technicalResistor colour codeRead resistance and tolerance from colour bands.
Use now →31Engineering & technicalThermal noiseCalculate receiver thermal noise power.
Use now →32Finance & businessReturn on investmentCompare an investment’s gain with its cost.
Use now →33Finance & businessProfit marginCalculate margin, markup and gross profit.
Use now →34Finance & businessCurrency converterConvert values using current exchange rates.
Use now →35Finance & businessGold valueEstimate value by weight, purity and market rate.
Use now →36Finance & businessZakat calculatorOrganize eligible assets and estimate zakat.
Use now →37Health & everydayTime calculatorAdd durations and compare times.
Use now →38Health & everydayFuel consumptionCompare distance, fuel use and journey cost.
Use now →39Health & everydayCooking converterConvert volume, weight and temperature for recipes.
Use now →Math & science
Scientific calculator
Arithmetic, powers, roots and trigonometric functions.NUNX calculators provide estimates for learning and planning. Verify critical research, engineering, medical or financial decisions with an appropriate qualified source.
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