Weight Converter
Convert between weight and mass units instantly — milligrams, grams, kilograms, tonnes, ounces, pounds, stone, and US tons.
Result
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Calculated locally. Your numbers never leave your browser.
Common questions
Is the pound-to-kilogram conversion the same exact definition used internationally?
Yes — 1 pound = 0.45359237 kg exactly, the same international standard (also fixed in 1959) that every other imperial weight unit here — ounces, stone, US tons — is derived from.
"US tons" — is that the same as a metric tonne or a UK ton?
No, and mixing these up is a common mistake. This is the US short ton (2,000 lb), which is different from both the metric tonne (1,000 kg, also offered here) and the UK long ton (2,240 lb, not offered here).