Metric and imperial weight units
Metric weights are based on the kilogram: a gram is a thousandth of it and a metric ton (tonne) is 1,000 kg. The pound has been defined as exactly 0.45359237 kg since 1959, and all other imperial and US weights follow from it.
- 1 ounce is 1/16 of a pound, or about 28.35 g.
- 1 stone is 14 pounds, or about 6.35 kg. It is still common for body weight in the UK and Ireland.
- 1 US ton (short ton) is 2,000 pounds, or about 907 kg.
- 1 UK ton (long ton) is 2,240 pounds, or about 1,016 kg.
Strictly speaking these are units of mass, and a scale shows mass. In everyday language both are called weight, and the numbers are the same.
Common weight conversions
| From | Equals |
|---|---|
| 1 kilogram | 2.204622622 pounds |
| 1 pound | 0.45359237 kilograms |
| 1 ounce | 28.34952313 grams |
| 1 gram | 0.03527396195 ounces |
| 1 stone | 6.35029318 kilograms |
| 1 stone | 14 pounds |
| 1 metric ton | 2,204.622622 pounds |
| 1 US ton | 907.18474 kilograms |
Kilograms to pounds chart
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 | 2.2046 |
| 2 | 4.4092 |
| 5 | 11.023 |
| 10 | 22.046 |
| 20 | 44.092 |
| 30 | 66.139 |
| 40 | 88.185 |
| 50 | 110.23 |
| 60 | 132.28 |
| 70 | 154.32 |
| 80 | 176.37 |
| 90 | 198.42 |
| 100 | 220.46 |
Pounds to kilograms chart
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.45359 |
| 5 | 2.268 |
| 10 | 4.5359 |
| 50 | 22.68 |
| 100 | 45.359 |
| 120 | 54.431 |
| 140 | 63.503 |
| 150 | 68.039 |
| 160 | 72.575 |
| 180 | 81.647 |
| 200 | 90.718 |
| 250 | 113.4 |
How to use it
- 1Pick the unit you have on the left and the unit you want on the right.
- 2Type a value on either side. The other side updates as you type, and the swap button turns the conversion around.
- 3Read the result and the factor below it, or tap any unit in the list to convert into it. Copy the result or a link to share it.
Frequently asked questions
How many pounds are in a kilogram?
About 2.2046. One kilogram is exactly 1 ÷ 0.45359237 pounds, which is 2.20462262 lb.
Is there a quick way to convert kg to lbs in my head?
Double the kilograms and add 10 percent. For 70 kg that is 140 + 14 = 154 lb, very close to the exact 154.32 lb.
How do I convert my weight in stone?
One stone is 14 pounds. 11 st 4 lb is 11 × 14 + 4 = 158 lb, which is about 71.7 kg. Enter the total pounds, or the stone as a decimal, in the converter.
What is the difference between a ton and a tonne?
A metric tonne is 1,000 kg. A US ton is 2,000 lb (907 kg) and a UK ton is 2,240 lb (1,016 kg). The converter lists all three.