Lbs to kg
One pound is 0.45359237 kilograms. Type a weight in pounds to see it in kilograms.
How to convert pounds to kilograms
Multiply the number of pounds by 0.45359237.
kilograms = pounds × 0.45359237
For example, 150 lb × 0.45359237 = 68.04 kg. The figure is exact: since 1959 the pound has been defined as precisely 0.45359237 kilograms by international agreement.
A quick way to do it in your head
Halve the pounds, then take off a tenth of the result.
- 150 lb: half is 75, less a tenth (7.5) is 67.5. The true answer is 68.04 kg.
- 200 lb: half is 100, less 10 is 90. The true answer is 90.72 kg.
- 44 lb: half is 22, less 2.2 is 19.8. The true answer is 19.96 kg.
This lands within 1% every time, which is close enough for luggage, gym weights and recipes.
Pounds to kilograms table
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45 kg |
| 2 lb | 0.91 kg |
| 5 lb | 2.27 kg |
| 10 lb | 4.54 kg |
| 15 lb | 6.8 kg |
| 20 lb | 9.07 kg |
| 25 lb | 11.34 kg |
| 30 lb | 13.61 kg |
| 40 lb | 18.14 kg |
| 50 lb | 22.68 kg |
| 60 lb | 27.22 kg |
| 70 lb | 31.75 kg |
| 80 lb | 36.29 kg |
| 90 lb | 40.82 kg |
| 100 lb | 45.36 kg |
| 110 lb | 49.9 kg |
| 120 lb | 54.43 kg |
| 130 lb | 58.97 kg |
| 140 lb | 63.5 kg |
| 150 lb | 68.04 kg |
| 160 lb | 72.57 kg |
| 170 lb | 77.11 kg |
| 180 lb | 81.65 kg |
| 190 lb | 86.18 kg |
| 200 lb | 90.72 kg |
| 220 lb | 99.79 kg |
| 250 lb | 113.4 kg |
| 300 lb | 136.08 kg |
Weights you are likely to meet
| What | Pounds | Kilograms |
|---|---|---|
| Carry-on bag limit on many airlines | 15 to 22 lb | 6.8 to 9.98 kg |
| Checked bag limit on most economy tickets | 50 lb | 22.68 kg |
| A standard barbell | 45 lb | 20.41 kg |
| A large weight plate | 45 lb | 20.41 kg |
| A newborn baby, average | 7.5 lb | 3.4 kg |
Airlines outside the United States usually state the checked bag limit as 23 kg, which is the metric equivalent of 50 lb rounded up slightly.
Pounds and ounces
A pound is 16 ounces. To convert a weight given in pounds and ounces, turn the ounces into a fraction of a pound first: 7 lb 8 oz is 7.5 lb, which is 3.4 kg. One ounce is 28.35 grams.
Stone
In the United Kingdom and Ireland, body weight is often given in stone. One stone is 14 pounds, or 6.35 kg. Eleven stone is 154 lb, which is 69.85 kg.
To go the other way, use kg to lbs. For other units, see the unit converter.
Questions
How many kg is 1 lb?
0.45359237 kg, or about 0.454 kg.
How many kg is 100 lbs?
45.36 kg.
How many kg is 150 lbs?
68.04 kg.
How many kg is 200 lbs?
90.72 kg.
Is lb the same as lbs?
Yes. “lb” is the abbreviation for pound and comes from the Latin word libra. “lbs” is a common plural form. Both mean pounds.