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Unit Converter

Convert length, mass, temperature, volume, area, speed and data units locally.

Processed locally in your browser. Your input is not uploaded.

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How to use Unit Converter

Decimal data units use 1 KB = 1,000 bytes. Volume uses US customary measures.

Details and limits

Temperature uses Celsius, Fahrenheit and Kelvin formulas, including absolute-zero validation. Results show up to 12 significant digits.

Practical example

Always check both units before copying a result. Volume measurements use US customary units where applicable, and decimal data units use powers of 1000.

Choose temperature, enter 0 in Celsius and select Fahrenheit to get 32. For length, 2.5 meters converts to 250 centimeters.

Frequently asked questions

Can I convert square meters into meters?

No. Area and length measure different quantities. Choose units from the same category; calculating a side length also requires the shape.

Do I need to change the value when swapping units?

The Swap control exchanges the source and destination units while keeping the entered number. It does not replace the input with the previous result.

Can the converter estimate travel time from a speed?

It converts speed units, not journeys. To estimate time you also need distance, using consistent units and any stops separately.