Free Unit Converters

Convert between different units instantly with our free online unit converters. Support for metric and imperial systems with precise calculations.

Length Converter

Convert between different length units: meters, feet, inches, kilometers, miles, and more.

Convert weight between kilograms, pounds, ounces, stones, and other weight units.

Convert temperatures between Celsius, Fahrenheit, and Kelvin scales.

Convert speed between km/h, mph, m/s, knots, and other speed units.

Convert area between square meters, square feet, acres, hectares, and other area units.

Convert volume between liters, gallons, milliliters, fluid ounces, and other volume units.

Convert pressure between bar, PSI, Pascal, atmospheres, and other pressure units.

Convert energy between joules, calories, kWh, BTU, and other energy units.