Weight converter
Kilograms to pounds, and pounds to kilograms
Convert a weight while keeping the original measurement and unit. This calculator changes units; it does not set a weight goal or interpret your progress.
Convert your measurement
One pound is exactly 0.45359237 kilograms. Enter a positive number using a decimal point or decimal comma, without a thousands separator. Results below round to two decimal places.
How to convert kg to lb
Divide the weight in kilograms by 0.45359237:
pounds = kilograms ÷ 0.45359237
For example, 80 kg ÷ 0.45359237 = approximately 176.37 lb. Multiplying kilograms by 2.2 is a rough shortcut, but this calculator uses the full factor.
How to convert pounds to kilograms
Multiply the weight in pounds by 0.45359237:
kilograms = pounds × 0.45359237
For example, 200 lb × 0.45359237 = approximately 90.72 kg. “lbs” and “lb” commonly refer to the same pound unit; the standard symbol is lb.
Common weight conversions
| Kilograms to pounds | Result | Pounds to kilograms | Result |
|---|---|---|---|
| 50 kg in lb | 110.23 lb | 100 lb in kg | 45.36 kg |
| 60 kg in lb | 132.28 lb | 120 lb in kg | 54.43 kg |
| 70 kg in lb | 154.32 lb | 140 lb in kg | 63.50 kg |
| 80 kg in lb | 176.37 lb | 160 lb in kg | 72.57 kg |
| 90 kg in lb | 198.42 lb | 180 lb in kg | 81.65 kg |
| 100 kg in lb | 220.46 lb | 200 lb in kg | 90.72 kg |
| 110 kg in lb | 242.51 lb | 220 lb in kg | 99.79 kg |
| 120 kg in lb | 264.55 lb | 250 lb in kg | 113.40 kg |
| 150 kg in lb | 330.69 lb | 300 lb in kg | 136.08 kg |
Keep your log consistent
Save the original scale reading and its unit, and use one unit when comparing records. A rounded conversion can differ slightly when converted back. A change in the displayed number caused by switching units is not a change in your actual weight.
The converter supports kg and lb only. It does not convert medication amounts, milliliters, pen clicks or syringe units, and its result must not be used to calculate a medication dose.
Source and calculation
The conversion factor is from the NIST Guide to the SI, Appendix B.8, for the avoirdupois pound. The factor is exact; the displayed result is rounded. Calculator inputs are processed in your browser and are not sent by this tool.