KG to Stones Converter
Convert kilograms to stones — 6.35 kg to the stone, the way body weight is still quoted in Britain and Ireland. Results update as you type; exact factors shown.
One kilogram is 0.1575 stones — see the exact factor, not a rounded rule of thumb.
How the kg to stones converter works
Mass converts through the kilogram. The avoirdupois pound has been exactly 0.45359237 kg since 1959, so an ounce is 28.349523125 g and a stone (14 lb) is 6.35029318 kg. A US short ton is 2,000 lb; an imperial long ton is 2,240 lb; a metric tonne is 1,000 kg.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common mass conversions
| From | To | Units |
|---|---|---|
| 40 kg | 6.2989 st | kilograms to stones |
| 50 kg | 7.8737 st | kilograms to stones |
| 60 kg | 9.4484 st | kilograms to stones |
| 65 kg | 10.2357 st | kilograms to stones |
| 70 kg | 11.0231 st | kilograms to stones |
| 75 kg | 11.8105 st | kilograms to stones |
| 80 kg | 12.5978 st | kilograms to stones |
| 85 kg | 13.3852 st | kilograms to stones |
| 90 kg | 14.1726 st | kilograms to stones |
| 100 kg | 15.7473 st | kilograms to stones |
| 110 kg | 17.322 st | kilograms to stones |
| 120 kg | 18.8968 st | kilograms to stones |
Units in this converter and their exact factors
| Unit | Symbol | One unit in kilograms |
|---|---|---|
| milligram | mg | 0.000001 kilogram |
| gram | g | 0.001 kilogram |
| kilogram | kg | 1 kilogram |
| tonne (metric ton) | t | 1,000 kilogram |
| ounce | oz | 0.0283495231 kilogram |
| pound | lb | 0.45359237 kilogram |
| stone | st | 6.35029318 kilogram |
| US ton (short) | US ton | 907.18474 kilogram |
| imperial ton (long) | long ton | 1,016.0469088 kilogram |
FAQFrequently asked questions about mass conversion
How many stones is 70 kg?
11.02 stone — 11 stone 0.3 lb.
How do I read the decimal as pounds?
Multiply the fraction by 14: 0.5 stone is 7 lb.
How many kg in a stone?
6.35029 kg.
Why fourteen pounds?
The stone was standardised at 14 lb for wool in 1389 and stuck for body weight.
Does anywhere else use stones?
Essentially only Britain and Ireland, and only for people.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.