22 tools
Calculators
Quick maths: percentages, VAT, loans and everyday conversions.
- Percentage calculatorWork out a percentage of a number, a share and a change.
- Scientific calculatorCalculator with functions, brackets and the whole expression on screen.
- LCM and GCDThe lowest common multiple and greatest common divisor of several numbers.
- Prime factorisationBreak a number into primes, list its divisors, spot a prime.
- Rule of threeSolve a proportion and see the two steps that get there.
- BMI calculatorWork out your body mass index and which band it falls in.
- Fuel cost calculatorWork out the fuel a trip burns and what it costs.
- Days between datesCount the days between two dates, split into weekdays and weekends.
- Age calculatorWork out an age in years, months and days from a date of birth.
- Unit converterConvert length, weight, temperature, volume and energy.
- Currency converterConvert between 27 currencies at the ECB reference rate.
- Roman numeralsConvert Roman numerals to numbers and back, with a breakdown.
- Mortgage calculatorMonthly payment, LTV, interest and what an overpayment saves.
- Loan calculatorMonthly payment, total cost and APR of a loan, with a schedule.
- Due date calculatorWork out a due date from a period, conception or IVF transfer.
- Calorie calculatorDaily calorie intake for losing, keeping or gaining weight.
- Week numberFind the ISO week number for a date, or the dates of a week.
- Area and perimeterArea and perimeter of ten plane shapes, with the formulas.
- Czech freelancer tax calculator (OSVČ)Income tax, social and health insurance and advances for Czech sole traders, with the flat tax compared.
- Czech sick pay calculatorWhat you receive when ill: employer wage compensation and state sickness benefit.
- Czech maternity benefit calculatorDaily, monthly and total maternity benefit (PPM) with start and end dates.
- Savings calculatorHow much you save with compound interest, or how much to put aside each month for a goal.
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