Stone to Kilogram Converter
1 st = 6.350293 kg — convert instantly with formula and table.
Use the converter above for an immediate result — it recalculates on every keystroke and works offline once the page has loaded.
Quick answer: one stone equals 6.3503 kilograms. So to convert stones to kilograms, multiply by 6.35029318.
How to convert stones to kilograms
kilograms = stones × 6.35029318
The stone (14 pounds, about 6.35 kg) is the traditional British and Irish unit for body weight — someone might be "11 stone 4" rather than 158 pounds.
The kilogram is the SI base unit of mass, since 2019 defined via the Planck constant rather than a physical metal cylinder in Paris.
Stone to Kilogram conversion table
| Stone (st) | Kilogram (kg) |
|---|---|
| 0.01 st | 0.063503 kg |
| 0.1 st | 0.635029 kg |
| 0.25 st | 1.5876 kg |
| 0.4 st | 2.5401 kg |
| 0.75 st | 4.7627 kg |
| 1.25 st | 7.9379 kg |
| 1.75 st | 11.113 kg |
| 2.5 st | 15.8757 kg |
| 3.5 st | 22.226 kg |
| 4.5 st | 28.5763 kg |
| 6 st | 38.1018 kg |
| 8 st | 50.8023 kg |
| 10 st | 63.5029 kg |
| 12 st | 76.2035 kg |
| 14 st | 88.9041 kg |
| 16 st | 101.6047 kg |
| 18 st | 114.3053 kg |
| 20 st | 127.0059 kg |
| 24 st | 152.407 kg |
| 26 st | 165.1076 kg |
| 30 st | 190.5088 kg |
| 35 st | 222.2603 kg |
| 45 st | 285.7632 kg |
| 55 st | 349.2661 kg |
| 65 st | 412.7691 kg |
| 75 st | 476.272 kg |
| 85 st | 539.7749 kg |
| 95 st | 603.2779 kg |
| 110 st | 698.5322 kg |
| 125 st | 793.7866 kg |
| 175 st | 1,111.3 kg |
| 250 st | 1,587.57 kg |
| 350 st | 2,222.6 kg |
| 450 st | 2,857.63 kg |
| 600 st | 3,810.18 kg |
| 750 st | 4,762.72 kg |
| 900 st | 5,715.26 kg |
| 1,500 st | 9,525.44 kg |
| 2,500 st | 15,875.73 kg |
| 10,000 st | 63,502.93 kg |
Need the opposite direction? Use the Kilogram to Stone converter, or read our complete guide to weight conversions for every formula in one place.
Frequently asked questions
How many kilograms are in one stone?
One stone equals 6.3503 kilograms. Multiply any stone value by 6.35029318 to get kilograms.
What is 10 stones in kilograms?
10 stones equal 63.5029 kilograms (10 × 6.350293).
Is the stone to kilogram conversion exact?
The conversion factor used here (6.35029318) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.