Units & Conversion · 英石与公斤（Stone & Kg） · Updated 2026-10-25
What Is Stone & Kilogram?
Definition
The stone is the British/Irish body-weight unit: 1 st = 14 lb ≈ 6.35029 kg. A Brit saying "11 stone 4" means 71.2 kg. The pound (lb) = 0.45359237 kg exactly; the ounce = 1/16 lb ≈ 28.35 g. The US uses pounds only; the UK uses stone+pounds. The fastest mental conversion: 1 kg ≈ 2.2 lb.
Formula
1 st = 14 lb = 6.35029 kg; 1 kg ≈ 2.2046 lb
Worked Example
70 kg = 154 lb = 11 st; a US chart at 185 lb = 83.9 kg; "heavyweight over 12 st" means above 76.2 kg.
Common Misconception
Adding the plural "stones" for body weight — "11 stone" is standard (stones means actual rocks). And don't equate pounds with Chinese jin: 1 jin = 500 g vs 1 lb = 454 g — a 10% error in recipes.
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