This pounds to kilograms converter gives you the lb to kg result instantly, in your browser, with the exact ratio so you can verify it. 1 pound is about 0.453592 kilograms, and going the other way, 1 kilogram is 2.20462 pounds. Pounds are an imperial unit still common in the United States and the United Kingdom; kilograms are part of the metric system used in most countries.
To convert by hand, multiply the number of pounds by 0.453592. For example, 10 pounds is 4.53592 kilograms and 100 pounds is 45.3592 kilograms. The table below lists the most requested values, and the converter above accepts decimals for anything in between.
lb to kg formula
kg = lb × 0.453592
1 pound is about 0.453592 kilograms. Multiply the value in pounds by that factor to get kilograms.
Pounds to Kilograms conversion table
| pounds | kilograms | Rounded |
|---|---|---|
| 1 lb | 0.453592 kg | 0.454 |
| 2 lb | 0.907185 kg | 0.907 |
| 3 lb | 1.36078 kg | 1.36 |
| 4 lb | 1.81437 kg | 1.81 |
| 5 lb | 2.26796 kg | 2.27 |
| 6 lb | 2.72155 kg | 2.72 |
| 7 lb | 3.17515 kg | 3.18 |
| 8 lb | 3.62874 kg | 3.63 |
| 9 lb | 4.08233 kg | 4.08 |
| 10 lb | 4.53592 kg | 4.54 |
| 12 lb | 5.44311 kg | 5.44 |
| 15 lb | 6.80389 kg | 6.8 |
| 20 lb | 9.07185 kg | 9.07 |
| 25 lb | 11.3398 kg | 11.3 |
| 30 lb | 13.6078 kg | 13.6 |
| 40 lb | 18.1437 kg | 18.1 |
| 50 lb | 22.6796 kg | 22.7 |
| 60 lb | 27.2155 kg | 27.2 |
| 70 lb | 31.7515 kg | 31.8 |
| 75 lb | 34.0194 kg | 34 |
| 80 lb | 36.2874 kg | 36.3 |
| 90 lb | 40.8233 kg | 40.8 |
| 100 lb | 45.3592 kg | 45.4 |
| 150 lb | 68.0389 kg | 68 |
| 200 lb | 90.7185 kg | 90.7 |
| 250 lb | 113.398 kg | 113 |
| 300 lb | 136.078 kg | 136 |
| 500 lb | 226.796 kg | 227 |
| 750 lb | 340.194 kg | 34 |
| 1,000 lb | 453.592 kg | 454 |
Frequently asked questions
How many kilograms are in 5 pounds?
5 lb = 2.26796 kg. Multiply 5 by 0.453592, the number of kilograms in one pound. The converter on this page does the same arithmetic for any value, including decimals.
What is the formula to convert pounds to kilograms?
kg = lb × 0.453592. The factor comes from the definitions of the units: 1 pound is about 0.453592 kilograms. Worked example: 12 lb = 5.44311 kg.
Is 30 lb the same as 13.6078 kg?
Yes. 30 lb = 13.6078 kg. Rounded to four decimals it is 13.61 kg.
How do I convert kilograms back to pounds?
Divide by 0.453592, or multiply by 2.20462: 1 kilogram is 2.20462 pounds. The kilograms to pounds page linked above lists common values the other way.
Is the lb to kg conversion exact?
1 pound is about 0.453592 kilograms. The ratio is a defined constant but produces a long decimal, so this page rounds to six significant digits, which is more precision than any everyday measurement needs.