lbs to kg
Convert pounds to kilograms.
Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to convert pounds to kilograms
1 lb = 0.453592 kg. 1 pound is exactly 0.45359237 kg.
Formula: kilograms = pounds × 0.45359237
Examples
- 2 lb = 0.91 kg
- 110 lb = 49.9 kg
- 150 lb = 68.04 kg
lb to kg conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 15 lb | 6.8039 kg |
| 20 lb | 9.0718 kg |
| 25 lb | 11.3398 kg |
| 30 lb | 13.6078 kg |
| 40 lb | 18.1437 kg |
| 50 lb | 22.6796 kg |
| 75 lb | 34.0194 kg |
| 100 lb | 45.3592 kg |
| 110 lb | 49.8952 kg |
| 120 lb | 54.4311 kg |
| 130 lb | 58.967 kg |
| 140 lb | 63.5029 kg |
| 150 lb | 68.0389 kg |
| 160 lb | 72.5748 kg |
| 180 lb | 81.6466 kg |
| 200 lb | 90.7185 kg |
| 220 lb | 99.7903 kg |
| 250 lb | 113.3981 kg |
Values are rounded to 4 decimal places.
How to use Lbs to kg
- Enter the values you want to calculate and choose the relevant units or settings.
- The result updates as you type. Adjust the available settings if needed.
- Review the result, then use Copy result or a download link when available.
Useful next steps
How Lbs to kg works
This converter multiplies your value in pounds by 0.45359237, the exact number of kilograms in one international avoirdupois pound, and shows the result in kilograms. It updates as you type and runs in your browser. Results are rounded to 12 significant digits, so very long decimals are trimmed. The tool uses avoirdupois pounds, the everyday pound for body weight, food and shipping, not the troy pound used for precious metals.
Before you start
Enter the weight as a single decimal number of pounds without commas or units. If you have pounds and ounces, convert the ounces to a fraction of a pound first.
A worked example
Entering 150 pounds returns 68.0388555 kg, and entering 1 pound returns exactly 0.45359237 kg.
Continue your workflow: Length, Weight, Temperature.
Common questions
How many kilograms are in a pound?
One pound is exactly 0.45359237 kilograms. That value was fixed by international agreement in 1959, so it is a definition rather than a measurement. A quick mental estimate is to divide pounds by 2.2, but the calculator uses the exact factor.
How do I convert pounds and ounces to kilograms?
This tool takes pounds only. Divide the ounces by 16 and add the result to the pounds, then enter the total. For example, 7 lb 8 oz becomes 7.5 lb, which converts to 3.401942775 kg. Rounding the ounces too early can shift the last digits.
Why does 1,000 not work?
The input accepts digits, a decimal point, an optional sign and scientific notation such as 1e3. Thousands separators like commas are rejected, so type 1000 instead of 1,000. Also use a dot for decimals, since a comma is not read as a decimal separator here.
Is dividing by 2.2 accurate enough?
Dividing by 2.2 gives about 68.18 kg for 150 lb, while the exact answer is 68.0388555 kg. The gap is about 0.2 percent, which is fine for rough estimates but noticeable for medication doses, shipping charges or lab work, where you should use the exact factor.