Convert Stone (UK) to kilograms
Western Europe · European Weight · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Stone (UK) = 6.35029 kilograms
kilograms = Stone (UK) × 6.35029
Convert any amount
Stone (UK) to kilograms table
| Stone (UK) | kilograms |
|---|---|
| 0.25 Stone (UK) | 1.58757 kilograms |
| 0.5 Stone (UK) | 3.17515 kilograms |
| 1 Stone (UK) | 6.35029 kilograms |
| 2 Stone (UK) | 12.7006 kilograms |
| 3 Stone (UK) | 19.0509 kilograms |
| 4 Stone (UK) | 25.4012 kilograms |
| 5 Stone (UK) | 31.7515 kilograms |
| 10 Stone (UK) | 63.5029 kilograms |
| 20 Stone (UK) | 127.006 kilograms |
| 25 Stone (UK) | 158.757 kilograms |
| 50 Stone (UK) | 317.514 kilograms |
| 100 Stone (UK) | 635.029 kilograms |
About the Stone (UK)
British body weight. 1 Stone = 14 pounds = 6.35 kg.
- Symbol
- st
- Value in SI
- 1 Stone (UK) = 6.35029 kilogram
- Typical use
- general
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI kilogram. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other european weight units in the Western Europe family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many kilograms are in a Stone (UK)?
1 Stone (UK) = 6.35029 kilograms. Multiply the number of Stone (UK) by 6.35029 to get kilograms.
What is Stone (UK) used for?
British body weight. 1 Stone = 14 pounds = 6.35 kg. It is classified as active and dates from the modern period.
Is the Stone (UK) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI kilogram, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Stone (UK) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Stone (UK) to kilograms. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/stone-to-kilogram
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.