Toolest

Calculators

Quick everyday calculators for numbers, dates and units.

Percentage CalculatorCalculate a percentage of a number, apply an increase or decrease, and more, instantly.CalculatorsDate DifferenceFind the exact number of days, weeks, months and years between two dates.CalculatorsBMI CalculatorCalculate your Body Mass Index from height and weight and see which range it falls in.CalculatorsKm ⇄ MilesConvert kilometers to miles or miles to kilometers instantly, in either direction.CalculatorsKg ⇄ LbsConvert kilograms to pounds or pounds to kilograms instantly, in either direction.CalculatorsCelsius ⇄ FahrenheitConvert Celsius to Fahrenheit or Fahrenheit to Celsius instantly, in either direction.CalculatorsCm ⇄ InchesConvert centimeters to inches or inches to centimeters instantly, in either direction.CalculatorsLiters ⇄ GallonsConvert liters to US gallons or US gallons to liters instantly, in either direction.CalculatorsTip CalculatorCalculate a tip and split the bill between any number of people instantly.CalculatorsLoan CalculatorCalculate the monthly payment, total cost and total interest of a loan instantly.CalculatorsRandom NumberGenerate a random whole number between two values, using a cryptographically strong source.CalculatorsRoman NumeralsConvert a number to Roman numerals or a Roman numeral back to a number, in either direction.CalculatorsTimestampConvert a Unix timestamp to a readable date, or a date to a Unix timestamp, entirely in your browser.DeveloperDecimal ⇄ BinaryConvert decimal to binary or binary to decimal instantly, in either direction.DeveloperDecimal ⇄ OctalConvert decimal to octal or octal to decimal instantly, in either direction.DeveloperDecimal ⇄ HexConvert decimal to hexadecimal or hexadecimal to decimal instantly, in either direction.DeveloperBinary ⇄ HexConvert binary to hexadecimal or hexadecimal to binary instantly, in either direction.DeveloperNumber to WordsConvert a number into its written-out English words, entirely in your browser.Calculators