Unit converter
Kilograms to Stone Converter
Convert kilograms to stone with the exact calculator factor 1000 / 6350.29318. Since one stone is 6350.29318 g and one kilogram is 1000 g, a kilogram is about 0.1574730444177697 st, while one stone is exactly 6.35029318 kg. This page is most useful for body weight, UK stone usage, medical notes, fitness tracking, and sport contexts where a metric scale gives kilograms but conversation or older records use stone. It can also help compare luggage or gym weights, though those are usually quoted in kilograms or pounds.
1 kilogram = 0.157473 stone
Common kilograms to stone values
| Kilograms | Stone |
|---|---|
| 1 kg | 0.157473 st |
| 2 kg | 0.314946 st |
| 5 kg | 0.787365 st |
| 10 kg | 1.5747 st |
| 20 kg | 3.1495 st |
| 50 kg | 7.8737 st |
| 100 kg | 15.7473 st |
How to convert
- Start with the mass in kilograms from the scale, record, allowance, or training plan.
- Multiply by the exact factor 1000 / 6350.29318, which is the same as dividing kilograms by 6.35029318.
- The result is the weight expressed as decimal stone.
- To convert stone back to kilograms, multiply the stone value by 6.35029318.
- For a quick mental estimate, divide kilograms by 6.35: 70 kg is a shade over 11 st.
stone = kilograms * (1000 / 6350.29318)
Kilograms are converted to grams by multiplying by 1000. The stone entry in the mass table is 6350.29318 grams. Dividing those quantities gives the exact kilograms-to-stone factor used here.
- kg
- the mass in kilograms you start with
- 6350.29318
- grams in one stone
- 1000
- grams in one kilogram
Worked example
A body weight of 82 kg is 82 multiplied by 1000 / 6350.29318, which equals 12.912789642257117 st. In stone-and-pounds style, that is 12 st plus about 12.779054991599637 lb.
Key facts
- One kilogram is 1000 / 6350.29318 st, about 0.1574730444177697 st.
- One stone is exactly 6.35029318 kg.
- 70 kg is 11.02311310924388 st.
- A 20 kg luggage allowance is 3.149460888355394 st, though airlines normally display it as 20 kg.
Tips
- For body weight, convert the decimal stone result into stone and pounds if that is easier to read.
- For medical or sport records, keep kilograms as the stored value and use stone only as a display conversion.
- When comparing gym plates, convert the total load rather than each plate if you only need a body-weight ratio.
Frequently asked questions
How many stone is 1 kg?+
One kilogram is 1000 / 6350.29318 st, about 0.1574730444177697 st.
How many kilograms are in 1 stone?+
One stone is exactly 6.35029318 kg.
Why convert kilograms to stone?+
Many UK adults still discuss body weight in stone, while bathroom scales, health records, and sports data often store the measured value in kilograms.
Can I use this for luggage allowances?+
Yes for comparison, but airline allowances are normally enforced in kilograms or pounds, so keep the original kilogram figure for check-in.
Things to watch
- Rounding kilograms before converting can move the stone-and-pounds result by more than a pound for some body-weight entries.
- Stone is an imperial UK-style unit; US customary weight normally uses pounds instead, although the pound inside the stone is the same avoirdupois pound.
Sources
- NIST Handbook 44, Appendix C: General Tables of Units of Measurement · NIST
- International yard and pound agreement (1959) · NIST
- Weights and Measures Act 1985 · UK legislation.gov.uk
Last updated: 2026-01-01
Conversions use internationally defined factors. Provided for general use; verify critical measurements independently.