Convert lb to kg
Quick reference table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.454 |
| 2 | 0.907 |
| 5 | 2.268 |
| 10 | 4.536 |
| 20 | 9.072 |
| 25 | 11.340 |
| 30 | 13.608 |
| 35 | 15.876 |
| 40 | 18.144 |
| 50 | 22.680 |
| 75 | 34.019 |
| 100 | 45.359 |
| 150 | 68.039 |
| 200 | 90.718 |
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How it works
The conversion uses the exact international avoirdupois relationship where 1 pound = 0.45359237 kilograms. Multiply pounds by 0.45359237 to get kilograms. Adjust decimal places or switch to scientific notation to change the format only; the underlying value remains the same.
Tip You can paste values that include spaces or thousands separators. The calculator sanitizes them automatically.
FAQs
The exact factor is 0.45359237 kg per pound. This definition is standardized internationally and does not vary by context.
No. Rounding only changes how many digits are displayed. The internal calculation uses full precision before formatting.
Scientific notation is useful for very large or very small values. Toggle the switch to display results in
aEb format such as 1.23E+4.
Yes. Use the custom range builder to set start end and step. The tool generates a table with up to 1000 rows for quick export or copying.
Pound (lb) is a unit of mass used primarily in the United States and a few other countries. Kilogram (kg) is the SI base unit of mass used worldwide.
No. The calculator accepts plain numbers. If you paste values with separators or spaces they are removed automatically before computing.
Yes. After a conversion appears click Copy result. The value is copied to your clipboard using plain text so it can be pasted anywhere.