Convert pounds to kilograms instantly. Enter a value below, or use the formula and reference table further down the page.
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How to convert pounds to kilograms
Multiply the value by 0.45359237.
kg = lb × 0.45359237Example: 10 lb = 4.5359 kg.
Pounds to Kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 3 lb | 1.3608 kg |
| 4 lb | 1.8144 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 15 lb | 6.8039 kg |
| 20 lb | 9.0718 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
Frequently asked questions
How many kilograms is 1 pound?
1 pound equals 0.4536 kilograms.
What is the formula to convert lb to kg?
To convert lb to kg, multiply the value by 0.45359237. The full formula is: kg = lb × 0.45359237.
How do I convert kilograms back to pounds?
Use the same calculator above and type your value into the kilograms field instead — it converts in both directions. Or use the reverse formula: lb = kg ÷ 0.45359237.
Is the lb to kg conversion exact?
The conversion factor used here (0.45359237) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.