How do you convert stone to kilograms?
Multiply by 6.35. British weights are often written as stone and pounds combined (11 st 4 lb): convert the pounds separately (1 lb = 0.454 kg) and add. 11 st 4 lb = 69.9 + 1.8 = 71.7 kg.
stone = kilograms ÷ 6.35
Body weights in stone and kilograms
| 7 st | 44.45 kg |
| 8 st | 50.80 kg |
| 9 st | 57.15 kg |
| 10 st | 63.50 kg |
| 11 st | 69.85 kg |
| 12 st | 76.20 kg |
| 14 st | 88.90 kg |
| 16 st | 101.60 kg |
Show every value
- 1 st = 6.35 kg
- 2 st = 12.701 kg
- 3 st = 19.051 kg
- 4 st = 25.401 kg
- 5 st = 31.751 kg
- 6 st = 38.102 kg
- 7 st = 44.452 kg
- 8 st = 50.802 kg
- 9 st = 57.153 kg
- 10 st = 63.503 kg
- 11 st = 69.853 kg
- 12 st = 76.204 kg
- 13 st = 82.554 kg
- 14 st = 88.904 kg
- 15 st = 95.254 kg
- 16 st = 101.605 kg
- 17 st = 107.955 kg
- 18 st = 114.305 kg
- 19 st = 120.656 kg
- 20 st = 127.006 kg
- 21 st = 133.356 kg
- 22 st = 139.706 kg
- 23 st = 146.057 kg
- 24 st = 152.407 kg
- 25 st = 158.757 kg
- 26 st = 165.108 kg
- 27 st = 171.458 kg
- 28 st = 177.808 kg
- 29 st = 184.159 kg
- 30 st = 190.509 kg
- 31 st = 196.859 kg
- 32 st = 203.209 kg
- 33 st = 209.56 kg
- 34 st = 215.91 kg
- 35 st = 222.26 kg
- 36 st = 228.611 kg
- 37 st = 234.961 kg
- 38 st = 241.311 kg
- 39 st = 247.661 kg
- 40 st = 254.012 kg
- 41 st = 260.362 kg
- 42 st = 266.712 kg
- 43 st = 273.063 kg
- 44 st = 279.413 kg
- 45 st = 285.763 kg
- 46 st = 292.113 kg
- 47 st = 298.464 kg
- 48 st = 304.814 kg
- 49 st = 311.164 kg
- 50 st = 317.515 kg
- 51 st = 323.865 kg
- 52 st = 330.215 kg
- 53 st = 336.566 kg
- 54 st = 342.916 kg
- 55 st = 349.266 kg
- 56 st = 355.616 kg
- 57 st = 361.967 kg
- 58 st = 368.317 kg
- 59 st = 374.667 kg
- 60 st = 381.018 kg
- 61 st = 387.368 kg
- 62 st = 393.718 kg
- 63 st = 400.068 kg
- 64 st = 406.419 kg
- 65 st = 412.769 kg
- 66 st = 419.119 kg
- 67 st = 425.47 kg
- 68 st = 431.82 kg
- 69 st = 438.17 kg
- 70 st = 444.521 kg
- 71 st = 450.871 kg
- 72 st = 457.221 kg
- 73 st = 463.571 kg
- 74 st = 469.922 kg
- 75 st = 476.272 kg
- 76 st = 482.622 kg
- 77 st = 488.973 kg
- 78 st = 495.323 kg
- 79 st = 501.673 kg
- 80 st = 508.023 kg
- 81 st = 514.374 kg
- 82 st = 520.724 kg
- 83 st = 527.074 kg
- 84 st = 533.425 kg
- 85 st = 539.775 kg
- 86 st = 546.125 kg
- 87 st = 552.476 kg
- 88 st = 558.826 kg
- 89 st = 565.176 kg
- 90 st = 571.526 kg
- 91 st = 577.877 kg
- 92 st = 584.227 kg
- 93 st = 590.577 kg
- 94 st = 596.928 kg
- 95 st = 603.278 kg
- 96 st = 609.628 kg
- 97 st = 615.978 kg
- 98 st = 622.329 kg
- 99 st = 628.679 kg
- 100 st = 635.029 kg
- 125 st = 793.787 kg
- 150 st = 952.544 kg
- 175 st = 1,111.301 kg
- 200 st = 1,270.059 kg
- 225 st = 1,428.816 kg
- 250 st = 1,587.573 kg
- 275 st = 1,746.331 kg
- 300 st = 1,905.088 kg
- 325 st = 2,063.845 kg
- 350 st = 2,222.603 kg
- 375 st = 2,381.36 kg
- 400 st = 2,540.117 kg
- 425 st = 2,698.875 kg
- 450 st = 2,857.632 kg
- 475 st = 3,016.389 kg
- 500 st = 3,175.147 kg
- 550 st = 3,492.661 kg
- 600 st = 3,810.176 kg
- 650 st = 4,127.691 kg
- 700 st = 4,445.205 kg
- 750 st = 4,762.72 kg
- 800 st = 5,080.235 kg
- 850 st = 5,397.749 kg
- 900 st = 5,715.264 kg
- 950 st = 6,032.779 kg
- 1,000 st = 6,350.293 kg
- 1,500 st = 9,525.44 kg
- 2,000 st = 12,700.586 kg
- 2,500 st = 15,875.733 kg
- 3,000 st = 19,050.88 kg
- 3,500 st = 22,226.026 kg
- 4,000 st = 25,401.173 kg
- 4,500 st = 28,576.319 kg
- 5,000 st = 31,751.466 kg
- 5,500 st = 34,926.612 kg
- 6,000 st = 38,101.759 kg
- 6,500 st = 41,276.906 kg
- 7,000 st = 44,452.052 kg
- 7,500 st = 47,627.199 kg
- 8,000 st = 50,802.345 kg
- 8,500 st = 53,977.492 kg
- 9,000 st = 57,152.639 kg
- 9,500 st = 60,327.785 kg
- 10,000 st = 63,502.932 kg
1 stone = 14 avoirdupois pounds = 6.35029318 kg exactly. Still customary in the UK and Ireland for body weight; withdrawn from trade in 1985. Methodology & sources.
Frequently asked questions
How many kilograms is 1 stone?
1 stone equals 6.35 kilograms, exactly 14 pounds. For a quick estimate, count 6.5 kg per stone and shave a little off.
Why do the British weigh themselves in stone?
The stone was historically a trade unit for wool and goods, with values that varied by commodity before being fixed at 14 pounds. It survives today only for body weight in the UK and Ireland; the United States never adopted it.
How do I read 11 st 4 lb?
11 stone and 4 pounds: 11 × 6.35 + 4 × 0.454 = 71.7 kg. British scales often show this combined format rather than decimal stone.
Why isn't 11.4 stone the same as 11 st 4 lb?
Because a stone is 14 pounds, not 10. The decimal part counts in fourteenths: 0.4 stone is 5.6 pounds, so 11.4 st reads 11 st 5.6 lb, that is 72.4 kg. A weight given as 11 st 4 lb is 158 lb, or 71.7 kg. Seven hundred grams separate the two notations, and nothing flags the confusion.
Do Americans weigh in stone too?
No, never for body weight. An American says 160 pounds where a Briton says 11 st 6 lb, for the same person. The stone was withdrawn from British trade in 1985 but survives in conversation, at the doctor's and on bathroom scales, exactly as the inch survived on screens.