LBS to KG Converter
Handy for body weight, baby weights, recipes and shipping weights given in pounds.
1 lb = 0.4536 kg
kilograms
1 lb = 0.4536 kg
How to convert pounds to kilograms
Multiply the number of pounds by 0.45359237.
Formula
kg = lb × 0.45359237
Examples
- 8 lb × 0.45359237 = 3.6287 kg
- 45 lb × 0.45359237 = 20.4117 kg
- 150 lb × 0.45359237 = 68.0389 kg
Pounds to kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.4536 |
| 2 | 0.9072 |
| 5 | 2.268 |
| 8 | 3.6287 |
| 10 | 4.5359 |
| 20 | 9.0718 |
| 25 | 11.3398 |
| 45 | 20.4117 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 120 | 54.4311 |
| 150 | 68.0389 |
| 180 | 81.6466 |
| 200 | 90.7185 |
| 250 | 113.3981 |
| 300 | 136.0777 |
Values rounded to 4 decimal places or 4 significant digits.
About pounds
The avoirdupois pound is defined as exactly 0.45359237 kilograms and is divided into 16 ounces. It is the everyday unit for body weight and groceries in the US, and is often abbreviated "lbs".
About kilograms
The kilogram is the SI base unit of mass. Since 2019 it has been defined by a fixed value of the Planck constant, replacing the metal prototype cylinder kept near Paris since 1889.
Frequently asked questions
How many kilograms are in one pound?
One pound equals 0.4536 kilograms (rounded).
How do I convert pounds to kilograms?
Multiply the number of pounds by 0.45359237. For example: 45 lb × 0.45359237 = 20.4117 kg.
How many pounds are in one kilogram?
One kilogram equals 2.2046 pounds.
Is the lb to kg conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.