Unit Converter
Universal converter for length, weight, temperature, volume, area, speed, time, data, pressure, and energy.
Universal converter for length, weight, temperature, volume, area, speed, time, data, pressure, and energy.
This universal unit converter supports ten categories of measurement: length, weight, temperature, volume, area, speed, time, data storage, pressure, and energy. Select a category tab, choose your source and target units, type a value, and see the result instantly. The swap button lets you reverse the conversion direction with one click.
Length covers millimeters through miles. Weight handles milligrams to metric tons. Temperature converts between Celsius, Fahrenheit, and Kelvin. Volume includes milliliters, liters, gallons, cups, and more. Area spans square millimeters to square miles. Speed converts m/s, km/h, mph, and knots. Time ranges from milliseconds to years. Data storage covers bits to petabytes. Pressure includes Pascal, bar, PSI, and atmospheres. Energy handles joules, calories, kilowatt-hours, and BTU.
Most conversions use a base-unit approach: the input value is first converted to a standard base unit (meters for length, grams for weight, etc.) and then converted from the base unit to the target. Temperature uses direct formulas since the scales are not simply multiplicative. All calculations happen in your browser with full floating-point precision.
Students use it for physics and chemistry homework. Engineers reference it for specifications across measurement systems. Travelers convert between metric and imperial for distances, weights, and temperatures. Cooks adapt recipes from international sources. This single page replaces the need for separate converter tools by combining every common unit category into one interface.