Weight and Mass Converter
Convert kilograms, pounds, ounces, stones and tonnes.
Weight Converter
Universal unit converter engine
What does Weight Converter do?
Convert between 16 units of mass, including the troy units used for precious metals and the tola used in South Asia. Stone-and-pounds composite entry is available for body weight.
How to Use Weight Converter
- 1Enter a weightAny value.
- 2Select the unitsFrom and to.
- 3Read the conversionPlus every other unit in the list.
Key Features
- 16 units including troy weights and the South Asian tola
- Exact factor: 1 pound = 0.45359237 kg
- Stone-and-pounds composite mode for body weight
- Short ton, long ton and metric tonne kept distinct
- Reference table for common values
Frequently Asked Questions
How many pounds is a kilogram?
2.20462 pounds, from the exact definition that one pound is 0.45359237 kg. For rough mental arithmetic, doubling and adding 10% is close enough.
What is a stone?
14 pounds, or about 6.35 kg. It is still the everyday unit for body weight in the UK and Ireland. The composite mode lets you enter stone and pounds together.
What is a troy ounce?
The unit for precious metals, at 31.1035 grams — about 10% heavier than the ordinary avoirdupois ounce of 28.35 grams. Gold and silver prices are always quoted per troy ounce.
What is the difference between the tonne and the ton?
A metric tonne is 1,000 kg. A US short ton is 907.18 kg and a UK long ton is 1,016.05 kg. All three are listed separately because the difference is around 10%.
Conversions run in your browser using fixed, published factors. Nothing you enter is transmitted, and the tool keeps working with the network disconnected.
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