Stones Conversion
The stone is a unit used to measure weight. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about stones.
Stone Conversion Calculators
Choose a unit of weight to convert to.
US Customary & Imperial Units
SI Units
Stone Definition and Usage
One stone is equal to 14 pounds and is mostly used in the United Kingdom and Ireland as a unit of mass. It's most commonly used to measure personal body weight.[1]
The stone is an imperial unit of weight. Stones can be abbreviated as st; for example, 1 stone can be written as 1 st.
How Much is a Stone?
If you're here then there's a good chance you might be wondering just how much is a stone? The chart below shows how much a stone is in other measures of weight.
| stones | tons | pounds | ounces | metric tons | long tons | kilograms | grams | milligrams | carats |
|---|---|---|---|---|---|---|---|---|---|
| 1 st | 0.007 t | 14 lb | 224 oz | 0.00635 t | 0.00625 lt | 6.350293 kg | 6,350 g | 6,350,293 mg | 31,751 ct |
| 2 st | 0.014 t | 28 lb | 448 oz | 0.012701 t | 0.0125 lt | 12.700586 kg | 12,701 g | 12,700,586 mg | 63,503 ct |
| 3 st | 0.021 t | 42 lb | 672 oz | 0.019051 t | 0.01875 lt | 19.05088 kg | 19,051 g | 19,050,880 mg | 95,254 ct |
| 4 st | 0.028 t | 56 lb | 896 oz | 0.025401 t | 0.025 lt | 25.401173 kg | 25,401 g | 25,401,173 mg | 127,006 ct |
| 5 st | 0.035 t | 70 lb | 1,120 oz | 0.031751 t | 0.03125 lt | 31.751466 kg | 31,751 g | 31,751,466 mg | 158,757 ct |
| 6 st | 0.042 t | 84 lb | 1,344 oz | 0.038102 t | 0.0375 lt | 38.101759 kg | 38,102 g | 38,101,759 mg | 190,509 ct |
| 7 st | 0.049 t | 98 lb | 1,568 oz | 0.044452 t | 0.04375 lt | 44.452052 kg | 44,452 g | 44,452,052 mg | 222,260 ct |
| 8 st | 0.056 t | 112 lb | 1,792 oz | 0.050802 t | 0.05 lt | 50.802345 kg | 50,802 g | 50,802,345 mg | 254,012 ct |
| 9 st | 0.063 t | 126 lb | 2,016 oz | 0.057153 t | 0.05625 lt | 57.152639 kg | 57,153 g | 57,152,639 mg | 285,763 ct |
| 10 st | 0.07 t | 140 lb | 2,240 oz | 0.063503 t | 0.0625 lt | 63.502932 kg | 63,503 g | 63,502,932 mg | 317,515 ct |
| 11 st | 0.077 t | 154 lb | 2,464 oz | 0.069853 t | 0.06875 lt | 69.853225 kg | 69,853 g | 69,853,225 mg | 349,266 ct |
| 12 st | 0.084 t | 168 lb | 2,688 oz | 0.076204 t | 0.075 lt | 76.203518 kg | 76,204 g | 76,203,518 mg | 381,018 ct |
| 13 st | 0.091 t | 182 lb | 2,912 oz | 0.082554 t | 0.08125 lt | 82.553811 kg | 82,554 g | 82,553,811 mg | 412,769 ct |
| 14 st | 0.098 t | 196 lb | 3,136 oz | 0.088904 t | 0.0875 lt | 88.904105 kg | 88,904 g | 88,904,105 mg | 444,521 ct |
| 15 st | 0.105 t | 210 lb | 3,360 oz | 0.095254 t | 0.09375 lt | 95.254398 kg | 95,254 g | 95,254,398 mg | 476,272 ct |
| 16 st | 0.112 t | 224 lb | 3,584 oz | 0.101605 t | 0.1 lt | 101.604691 kg | 101,605 g | 101,604,691 mg | 508,023 ct |
| 17 st | 0.119 t | 238 lb | 3,808 oz | 0.107955 t | 0.10625 lt | 107.954984 kg | 107,955 g | 107,954,984 mg | 539,775 ct |
| 18 st | 0.126 t | 252 lb | 4,032 oz | 0.114305 t | 0.1125 lt | 114.305277 kg | 114,305 g | 114,305,277 mg | 571,526 ct |
| 19 st | 0.133 t | 266 lb | 4,256 oz | 0.120656 t | 0.11875 lt | 120.65557 kg | 120,656 g | 120,655,570 mg | 603,278 ct |
| 20 st | 0.14 t | 280 lb | 4,480 oz | 0.127006 t | 0.125 lt | 127.005864 kg | 127,006 g | 127,005,864 mg | 635,029 ct |
References
- National Institute of Standards and Technology, Handbook 44 - 2012 - Appendix B, https://www.nist.gov/system/files/documents/2017/04/28/AppB-12-hb44-final.pdf
