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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
Body Weight

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.

Common stone values and equivalent imperial and metric weight measurements
stones pounds kilograms calories
1 st 14 lb 6.350293 kg 49,000 kcal
2 st 28 lb 12.700586 kg 98,000 kcal
3 st 42 lb 19.05088 kg 147,000 kcal
4 st 56 lb 25.401173 kg 196,000 kcal
5 st 70 lb 31.751466 kg 245,000 kcal
6 st 84 lb 38.101759 kg 294,000 kcal
7 st 98 lb 44.452052 kg 343,000 kcal
8 st 112 lb 50.802345 kg 392,000 kcal
9 st 126 lb 57.152639 kg 441,000 kcal
10 st 140 lb 63.502932 kg 490,000 kcal
11 st 154 lb 69.853225 kg 539,000 kcal
12 st 168 lb 76.203518 kg 588,000 kcal
13 st 182 lb 82.553811 kg 637,000 kcal
14 st 196 lb 88.904105 kg 686,000 kcal
15 st 210 lb 95.254398 kg 735,000 kcal
16 st 224 lb 101.604691 kg 784,000 kcal
17 st 238 lb 107.954984 kg 833,000 kcal
18 st 252 lb 114.305277 kg 882,000 kcal
19 st 266 lb 120.65557 kg 931,000 kcal
20 st 280 lb 127.005864 kg 980,000 kcal

References

  1. 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

Other Weight Units

US Customary & Imperial Units
SI Units
Other Units
Body Weight