Weight converter: kg to lbs, stone and pounds

Type a weight such as 70 kg or 11 st 4 lb, or type in any field below: every other unit follows. A body weight is also given in stone and pounds.

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Amount and unit

For example 70 kg, 11 st 4 lb, 150 lb in kg, 250 g in oz, 3 quintals in kg.

Answer

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Definitions

Pound, ounce, stone: A pound is 0.45359237 kg exactly; an ounce is a 16th of a pound (28.349523125 g) and a stone 14 pounds (6.35029318 kg).UK Weights and Measures Act 1985, Schedule 1.
Tons: A tonne (metric ton) is 1,000 kg. A UK (long) ton is 2,240 pounds, a US (short) ton 2,000 pounds.UK Weights and Measures Act 1985, Schedule 1; NIST Handbook 44 (2026), Appendix C.
Quintal: 100 kg, the quintale still used in Italy for grain and wood.UK Weights and Measures Act 1985, Schedule 1.
Troy ounce, carat: A troy ounce, for gold and silver, is 31.1034768 g; a metric carat, for gems, 0.2 g. A carat of weight is not the karat of gold purity.UK Weights and Measures Act 1985, Schedule 1; NIST Handbook 44 (2026).
Grain: A 7,000th of a pound, 64.79891 mg exactly, still used for bullets, arrows and some medicines. Written gr, which on this page means grams first, with the grain offered beside it.UK Weights and Measures Act 1985, Schedule 1; NIST Handbook 44 (2026), Appendix C. Sources read on 10 October 2026.

Body weights: kilograms to stone and pounds

kg	stone and pounds	pounds
50 kg	7 st 12.2 lb	110.2 lb
60 kg	9 st 6.3 lb	132.3 lb
70 kg	11 st 0.3 lb	154.3 lb
80 kg	12 st 8.4 lb	176.4 lb
90 kg	14 st 2.4 lb	198.4 lb
100 kg	15 st 10.5 lb	220.5 lb
110 kg	17 st 4.5 lb	242.5 lb

Rounded to a tenth of a pound.