🔄 Converters calculators
Free online converters for units, currencies, height, shoe sizes, cooking measurements, fuel economy, number systems and text.
10 free tools · no sign-up · formulas explained
Currency ConverterConvert between world currencies using exchange rates updated several times a day. Includes quick conversion tables.Unit ConverterConvert between metric and imperial units of length, weight, temperature, volume, area, speed, time, data, energy and pressure.Case ConverterPaste any text and switch it to upper, lower, title or sentence case – or to camelCase, snake_case and kebab-case for code.Cooking ConverterConvert recipe amounts between cups, spoons, milliliters, grams and ounces using the real density of each ingredient.Fuel Economy ConverterConvert fuel consumption between US miles per gallon, imperial mpg, liters per 100 km and kilometers per liter.Height ConverterConvert a height between centimeters and feet and inches in either direction, with a quick-reference height chart.Number Base ConverterConvert any whole number between binary, octal, decimal, hexadecimal and custom bases up to 36 – even very large numbers.Number to Words ConverterSpell out any number in English words – ready for writing a check, an invoice or a legal document.Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals to numbers, with each symbol broken down step by step.Shoe Size ConverterConvert an adult shoe size between US men's, US women's, UK, EU and centimeter (Mondopoint) systems.