Pounds to Kilograms Converter
Convert pounds to kilograms. The formula used here is 1 pound = 0.45359237 kilograms. The formula is kg = lb × 0.45359237; 1 lb is 0.453592 kg.
A US customary and imperial weight unit used for body, parcel, and food weights.
The SI base unit of mass, commonly used for body weight and shipping.
Start with your value in pounds, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
For freight, food, medicine, and fitness work, keep enough decimal places to match the measuring device and round the displayed value only after the conversion.
Most weight conversions here use exact defined relationships between metric and avoirdupois units, so the main accuracy limit is the input measurement itself. This page displays converted values with up to 6 decimal places by default.
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.453592 kg |
| 5 lb | 2.267962 kg |
| 10 lb | 4.535924 kg |
| 50 lb | 22.679619 kg |
| 100 lb | 45.359237 kg |
| 200 lb | 90.718474 kg |
Useful for checking parcel and freight weights. Use the same formula with your exact input if the measurement needs to be documented.
Useful for scaling recipes or reading nutrition labels. Use the same formula with your exact input if the measurement needs to be documented.
Useful for fitness, health, and lab measurements. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert pounds to kilograms?
Enter the value in pounds and apply kg = lb × 0.45359237. Round the kilograms result after the conversion, not before.
What is 1 pound in kilograms?
1 lb equals 0.453592 kg with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is 5 lb in kg?
5 lb is 2.267962 kg. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert kilograms back to pounds?
Yes. Use the reverse Kilograms to Pounds converter if you need to go the other direction.
How accurate is this pounds to kilograms conversion?
The calculator runs the formula in your browser and rounds results to 6 decimal places by default. Most weight conversions here use exact defined relationships between metric and avoirdupois units, so the main accuracy limit is the input measurement itself.