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Unit Converter

Convert between length, weight, and temperature units. Pick a category, enter a value, and see the result instantly.

Supported conversions

Length covers millimeters to miles, weight covers milligrams to tons, and temperature covers Celsius, Fahrenheit, and Kelvin. Switch categories using the dropdown — the unit lists update automatically.

What categories are supported?

Length, weight, and temperature, using the most common units for each.

How accurate are the results?

Standard published conversion factors are used, accurate to several decimal places.