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Unit Converter
Convert between length, weight, temperature, volume, area, and more with precision
Unit Converter
Convert between length, weight, temperature, volume, area, and more with precision
Converting Stones (st) to Kilograms (kg) is a standard weight / mass conversion used daily in science, engineering, travel, and everyday life. This conversion bridges the imperial and metric systems — one of the most common cross-system unit lookups worldwide.
1 Stones = 6.350295 Kilograms. Multiply any Stones value by this factor to get Kilograms.
| Stones | Kilograms | |
|---|---|---|
| 0.1 st | → | 6.3503e-1 kg |
| 0.25 st | → | 1.58757 kg |
| 0.5 st | → | 3.17515 kg |
| 1 st | → | 6.35029 kg |
| 2 st | → | 12.7006 kg |
| 5 st | → | 31.7515 kg |
| 10 st | → | 63.5029 kg |
| 25 st | → | 158.757 kg |
Used when translating UK body-weight readings into metric for international medical or fitness records.
Country usage: Stones are used in the UK and Ireland. Most of the world — including medical systems — uses kilograms.
Forgetting to convert the pounds component (1 st 6 lb = 14 lb total = 6.35 kg, not just 1 × 6.35 kg).
Until 2019, the kilogram was the last SI base unit defined by a physical object — a platinum-iridium cylinder kept in Paris. It is now defined by the Planck constant, making it infinitely reproducible.