Calculators
24 free tools - no sign-up, runs in your browser
Everyday math, money, date and health calculators with the working shown. Looking for something specific? Search the full directory.
Age CalculatorWork out an exact age in years, months and days between any two datesCalculatorsOpenDate Difference CalculatorCount the exact days, weeks and months between two datesCalculatorsOpenPercentage CalculatorAnswer the four everyday percentage questions, from X percent of Y to percentage changeCalculatorsOpenPercentage Change CalculatorMeasure how much a value grew or shrank between an old figure and a new one, as a percentageCalculatorsOpenBMI CalculatorCalculate body mass index from height and weight in metric or imperial unitsCalculatorsOpenBMR and TDEE CalculatorEstimate your daily calorie needs from the Mifflin-St Jeor equation and your activity levelCalculatorsOpenLoan EMI CalculatorCalculate the fixed monthly payment on a loan, with a full amortization scheduleCalculatorsOpenMortgage CalculatorWork out the real monthly cost of a home loan, including principal, interest and extrasCalculatorsOpenCompound Interest CalculatorProject how savings or investments grow when interest earns interest over timeCalculatorsOpenSimple Interest CalculatorCalculate simple interest on a principal with the textbook I = P x r x t formulaCalculatorsOpenSavings Goal CalculatorWork out how much to save each month to reach a goal amount by your target dateCalculatorsOpenSalary to Hourly CalculatorConvert pay between hourly, weekly, monthly and annual figures at your work hoursCalculatorsOpenVAT CalculatorAdd VAT or GST to a net price, or strip it back out of a gross priceCalculatorsOpenDiscount CalculatorFind the real price after one or two stacked discounts, with optional sales taxCalculatorsOpenTip CalculatorWork out a tip on a bill and split the total fairly between any number of peopleCalculatorsOpenCurrency Converter (offline rates)Convert between twelve major currencies using an editable rate table you controlCalculatorsOpenUnit ConverterConvert between units in eight families, from length and weight to data and speedCalculatorsOpenAspect Ratio CalculatorReduce any width and height to their simplest aspect ratio and find missing dimensionsCalculatorsOpenGPA CalculatorCompute a credit-weighted GPA on the standard 4.0 scale from your grades and creditsCalculatorsOpenGrade CalculatorFind the grade you need on the final to reach your target, from your current standingCalculatorsOpenTime Duration CalculatorMeasure the exact span between two date-times, shown in days, hours, minutes and secondsCalculatorsOpenHours CalculatorAdd up work hours from start and end times, with a break deducted and totals per entryCalculatorsOpenRoman Numeral ConverterConvert between Arabic numbers from 1 to 3999 and Roman numerals, both waysCalculatorsOpenFuel Cost CalculatorEstimate what a trip will cost in fuel from its distance and your vehicle's consumptionCalculatorsOpen
Frequently asked questions
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