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Unit Converters

Convert length, weight, volume, temperature and 150+ units

34 tools available

About Unit Converters

Convert across length, weight, volume, temperature, area, speed, pressure and dozens more unit families, with precise results and handy reference tables for every conversion.

It works fully offline in your browser, free and unlimited — the built-in reference tables also make it a useful study aid for students and engineers.

Frequently Asked Questions

How accurate are the unit conversions?

Conversions use exact internationally-defined factors (for example 1 inch = 25.4 mm by definition). Results display to high precision, and reference tables show every intermediate unit so you can verify any figure.

Does the converter need internet access?

After the page loads, conversions run offline in your browser - useful on flights or restricted networks. Nothing you type is transmitted anywhere.

Which unit families are covered?

Over thirty families: length, weight, volume, temperature, area, speed, pressure, energy, power, fuel economy, cooking measures, data storage, torque, frequency, angle, density, electrical units and more.

Can I convert cooking measurements like cups to grams?

Yes - the cooking converter handles cups, tablespoons, millilitres and weight measures for common kitchen ingredients, distinguishing volume from mass so recipes turn out right.

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