Pounds to Kilograms
Convert pounds to kilograms instantly, with a reference table.
Pounds to Kilograms at a glance
Pounds to Kilograms is a free online converter you can use right now to convert pounds to kilograms instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Pounds to Kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.453592 kg |
| 2 lb | 0.907185 kg |
| 3 lb | 1.360777 kg |
| 5 lb | 2.267962 kg |
| 10 lb | 4.535924 kg |
| 25 lb | 11.339809 kg |
| 50 lb | 22.679619 kg |
| 100 lb | 45.359237 kg |
| 500 lb | 226.79619 kg |
| 1000 lb | 453.59237 kg |
About Pounds to Kilograms
Convert pounds to kilograms instantly, with a reference table of common values. The factor is exact: 1 lb = 0.45359237 kg.
The everyday conversion outside the US: a body weight quoted in pounds, a US recipe, or a baggage allowance stated in pounds when the airline scale reads kilograms.
The pound descends from the Roman libra, which is why its abbreviation is lb. It was defined in 1959 as exactly 0.45359237 kilograms โ an unusually precise figure because it had to reconcile slightly different British and American pounds already in use. It is the standard unit of body weight and food packaging in the United States, and remains in common conversational use in the United Kingdom alongside metric labelling. A standard bag of sugar is 2 lb, and a gallon of water weighs about 8.34 lb.
Worked through with real numbers: 1 lb is 0.453592 kg, 5 lb is 2.268 kg, 50 lb is 22.68 kg.
As for the other side of the conversion: A litre of water weighs almost exactly 1 kg, which is not a coincidence โ the metric system was designed that way.
Strictly these are conversions of mass rather than weight โ mass is how much matter something contains, weight is the force gravity exerts on it. The distinction rarely matters on Earth, where the two are proportional, but it is why the same object masses the same on the Moon while weighing about a sixth as much.
How to use Pounds to Kilograms
- Enter the number of pounds you want to convert.
- The equivalent in kilograms appears instantly โ there is no button to press.
- Check the reference table for common Pounds to Kilograms values.
Frequently asked questions
How do I convert pounds to kilograms?
Multiply your pounds figure by 0.45359237 to get kilograms โ or type a value above and read the answer straight off.
How many kilograms are in one pound?
1 lb = 0.45359237 kg.
When would I need to convert pounds to kilograms?
The everyday conversion outside the US: a body weight quoted in pounds, a US recipe, or a baggage allowance stated in pounds when the airline scale reads kilograms.
What is a pound, exactly?
The pound descends from the Roman libra, which is why its abbreviation is lb. It was defined in 1959 as exactly 0.45359237 kilograms โ an unusually precise figure because it had to reconcile slightly different British and American pounds already in use. A standard bag of sugar is 2 lb, and a gallon of water weighs about 8.34 lb.
Where is the kilogram actually used?
It is the base SI unit of mass and the standard for body weight, groceries and freight almost everywhere outside the United States. A litre of water weighs almost exactly 1 kg, which is not a coincidence โ the metric system was designed that way.
Is there anything tricky about weight conversions?
Strictly these are conversions of mass rather than weight โ mass is how much matter something contains, weight is the force gravity exerts on it. The distinction rarely matters on Earth, where the two are proportional, but it is why the same object masses the same on the Moon while weighing about a sixth as much.
Is this converter accurate?
Yes. It uses the exact standard factor of 1 lb = 0.45359237 kg, and the conversion runs in your browser so nothing is uploaded.