Weight Converter
Convert weight and mass between kilograms, pounds, ounces, stones, grams and tonnes, using exact definitions, with all units shown side by side.
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Category: Weight
Result
Converted value
2.20462 lbEquation
1 kg = 2.20462 lb Reverse
1 lb = 0.453592 kg exact
All units
| Unit | Symbol | Value | Copy |
|---|---|---|---|
| Metric | |||
| Tonne (metric ton) | t | 0.001 | |
| Kilogram | kg | 1 | |
| Gram | g | 1,000 | |
| Milligram | mg | 1,000,000 | |
| Microgram | µg | 1,000,000,000 | |
| Imperial & UK | |||
| Pound | lb | 2.20462 | |
| Ounce | oz | 35.274 | |
| Stone | st | 0.157473 | |
| Long ton (UK) | ton (UK) | 0.000984207 | |
| US customary | |||
| Short ton (US) | ton (US) | 0.00110231 | |
| Other | |||
| Grain | gr | 15,432.4 | |
Conversion factors for every unit
One of each unit expressed in the base unit of this category (Kilogram).
| Unit | Symbol | In Kilogram |
|---|---|---|
| Tonne (metric ton) | t | 1,000 |
| Kilogram | kg | 1 |
| Gram | g | 0.001 |
| Milligram | mg | 0.000001 |
| Microgram | µg | 1e-9 |
| Pound | lb | 0.45359237 |
| Ounce | oz | 0.028349523125 |
| Stone | st | 6.35029318 |
| Short ton (US) | ton (US) | 907.18474 |
| Long ton (UK) | ton (UK) | 1,016.0469088 |
| Grain | gr | 0.00006479891 |
How to use
- The page opens on Weight with kg → lb (lb → kg in the US); pick other units in From and To.
- Type the number in Value to convert grams, ounces, stones, pounds and tonnes at once.
- Use ⇄ Swap to reverse the pair, and Precision to fix the number of significant digits.
- In the unit table, metric tonnes, US short tons and UK long tons are listed separately.
- Copy the converted value or any row of the unit table, or use Share link to send it on.
FAQ
How many kilograms is one pound?
Exactly 0.45359237 kg. The international avoirdupois pound has been defined against the kilogram since 1959, so pound-to-kilogram conversions are exact.
What is a stone?
A stone is 14 pounds, or 6.35029318 kg. It is still commonly used for body weight in the UK and Ireland, usually written as “11 st 4 lb”.
Is a US ton the same as a metric tonne?
No. A metric tonne is 1,000 kg, a US short ton is 907.18474 kg and a UK long ton is 1,016.0469088 kg. All three are listed separately so the difference is never hidden.
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