Calculator Corner
One place for every tool in Calculator Corner.
Practical everyday maths.
14 free toolsNo sign-up requiredWorks on any deviceYour files stay with you
Explore Calculator Corner below and find the right tool for your task.
Tools in Calculator Corner
14 toolsGrouped by the job you came to do.
Work it out
Answers with the working shown.5 toolsPercentage calculatorPercent of a number, change between two numbers, and the reverse.MATHDate differenceDays, weeks and working days between two dates, inclusive or not.DATESBMI calculatorBody mass index in metric or imperial, with the category it falls in.HEALTHAge calculatorExact age in years, months and days, plus the next birthday countdown.DATESRoman numeralsConvert in both directions, with the subtractive rules applied properly.NUMBERS
Money & bills
Interest, tax, and what you actually owe.5 toolsLoan & EMI calculatorMonthly instalment, total interest and the full cost of borrowing.FINANCETip & bill splitTip, total and the per-person share, rounded the way people actually pay.MONEYDiscount calculatorSale price, money saved, and what a stacked second discount really costs.MONEYVAT & sales taxAdd or strip tax at any rate, and see the net, tax and gross split out.MONEYCompound interestWhat regular saving becomes, and how much of it is growth rather than deposits.FINANCE
Units & conversions
Ratios, sizes and rates, converted.4 toolsAspect ratio calculatorScale a width or height and keep the ratio exact, with the simplified form.PIXELSDownload time calculatorHow long a file takes on a given connection, and the other way round.BYTES · MBPSData size converterConvert between bytes, kibibytes and the decimal units marketing uses.KB · MB · GBUnit converterLength, weight, temperature and volume, metric and imperial both ways.UNITS
About Calculators
Why show the working?
Because a number with no derivation is impossible to sanity-check. If the answer looks wrong, the working tells you whether the tool or the input was at fault.
Which currency do the finance tools use?
None. The figures follow whatever unit you enter, so the instalment is in the same currency as the amount.
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