120 kg in pounds
The exact figure, the arithmetic behind it, and the same weight in stone for anyone in the UK.
How the conversion works
One pound is defined as exactly 0.45359237 kilograms, so dividing by that figure converts kilograms to pounds precisely.
120 ÷ 0.45359237 = 264.5547 pounds
For mental arithmetic, doubling the kilograms and adding 10% gets you close: 120 × 2 = 240, plus 10% is 264 — against an exact 264.6.
Britain and Ireland usually express body weight in stones, where one stone is 14 pounds. 264.6 ÷ 14 gives 18 stone 12.6 pounds.
Weights either side of this
| Kilograms | Pounds | Stone and pounds | Grams |
|---|---|---|---|
| 115 kg | 253.5 lb | 18 st 1.5 lb | 115,000 g |
| 116 kg | 255.7 lb | 18 st 3.7 lb | 116,000 g |
| 117 kg | 257.9 lb | 18 st 5.9 lb | 117,000 g |
| 118 kg | 260.1 lb | 18 st 8.1 lb | 118,000 g |
| 119 kg | 262.4 lb | 18 st 10.4 lb | 119,000 g |
| 120 kg | 264.6 lb | 18 st 12.6 lb | 120,000 g |
| 121 kg | 266.8 lb | 19 st 0.8 lb | 121,000 g |
| 122 kg | 269 lb | 19 st 3 lb | 122,000 g |
| 123 kg | 271.2 lb | 19 st 5.2 lb | 123,000 g |
| 124 kg | 273.4 lb | 19 st 7.4 lb | 124,000 g |
| 125 kg | 275.6 lb | 19 st 9.6 lb | 125,000 g |
Frequently asked questions
How many pounds is 120 kg?
120 kg is 264.55 pounds, which rounds to 265 lb.
What is 120 kg in stone?
18 stone 12.6 pounds. A stone is 14 pounds, and the unit is still commonly used for body weight in the UK and Ireland.
Is the conversion exact?
Yes. Since 1959 the international pound has been defined as exactly 0.45359237 kilograms, so the factor is a definition rather than a measurement.
What is the quick way to do this in my head?
Double the kilograms, then add 10%. For 120 kg: 240 + 24 = 264 lb, which is within half a pound of the exact answer.
Nearby values
Last reviewed September 5, 2026. The pound is defined as exactly 0.45359237 kg, so this conversion is exact.