Weight Converter

Convert common metric and imperial weight units.

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Calculation details

All calculations run locally in your browser. No data is stored.

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Uses exact SI relationships and internationally defined avoirdupois pound and ounce conversions.

Frequently asked questions

How many kilograms are in a pound?

One international avoirdupois pound is exactly 0.45359237 kilogram.

Is tonne the metric tonne?

Yes. One metric tonne equals exactly 1,000 kilograms.