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Unit converters

Lengthmm · cm · m · km Weightmg · g · kg · t Temperature°C · °F · K Volumeml · l · m³ · tsp Areacm² · m² · ha · km² Speedm/s · km/h · mph · kn PressurePa · hPa · kPa · bar EnergyJ · kJ · cal · kcal PowerW · kW · hp · PS Data storagebit · B · KB · MB Fuel economympg (US) · mpg (UK) · km/L · L/100 km

Most used

kilometers → mileskilograms → poundsdegrees Celsius → degrees Fahrenheitcentimeters → inchesfeet → metersliters → gallons (US)pounds → kilogramsdegrees Fahrenheit → degrees Celsius

Calculators and number tools

Number base converterBinary, octal, decimal and hex Paper sizesA4, Letter and every ISO size Percentage calculatorPercent of a number, percent change Tip calculatorTip and split the bill Roman numeralsConvert numbers to Roman numerals and back Number to wordsWrite any number out in words

Money calculators

Loan and mortgage calculatorMonthly payment and total interest Compound interest calculatorHow savings grow over time Salary converterHourly, weekly, monthly and yearly pay Discount calculatorSale price and savings

Kitchen conversions (cups to grams) →