Pounds to Kilograms Converter
Convert pounds (lb) to kilograms (kg). One pound equals 0.453592 kilograms, so multiply a value in pounds by 0.453592 to get kilograms.
Formula: multiply the source value by 0.45359237
Quick Conversions
About this tool
The international avoirdupois pound is exactly 0.45359237 kilograms. The kilogram is the SI base unit of mass.
How to use it
- Type a value in pounds in the first field. The unit menus start on lb → kg.
- Read the result in kilograms. It updates as you type; use Precision to choose how many decimals are shown.
- Press the swap button, or open the Kilograms to Pounds converter, to convert kilograms back to pounds.
kg = lb × 0.45359237
lb = kg ÷ 0.45359237
Examples
1 lb to kg
1 lb × 0.453592 = 0.453592 kg.
10 lb to kg
10 lb × 0.453592 = 4.53592 kg.
150 lb to kg
150 lb × 0.453592 = 68.0389 kg.
Pounds to kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.453592 |
| 2 | 0.907185 |
| 3 | 1.36078 |
| 4 | 1.81437 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 15 | 6.80389 |
| 20 | 9.07185 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 250 | 113.398 |
| 500 | 226.796 |
| 1,000 | 453.592 |
Kilograms to pounds (reverse)
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 | 2.20462 |
| 5 | 11.0231 |
| 10 | 22.0462 |
| 50 | 110.231 |
| 100 | 220.462 |
FAQ
How many kilograms are in one pound?
One pound is 0.453592 kilograms. The unrounded factor is 0.45359237.
How do I convert kilograms back to pounds?
Divide by 0.453592, or multiply by 2.20462. For example, 10 kg is 22.0462 lb.
Is a quick estimate of dividing by 2.2 accurate?
It is close. Dividing by 2.2 gives about 0.2% more kilograms than the exact result. For 150 lb, it gives 68.18 kg instead of 68.04 kg.
Is the conversion exact?
Yes, before rounding. The pound has been defined as exactly 0.45359237 kg since 1959, and the ounce as 1/16 of that.