Stones to Pounds Converter

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Convert stones to pounds with the UK relation 1 stone = 14 lb. A 10-stone person weighs 140 lb; a 12-stone person weighs 168 lb; a 14-stone person weighs 196 lb. Practical when British body-weight reports need to feed into US fitness or medical forms that expect pounds. Browser-local conversion, no upload.

Stone (st)
Pound (lb)

Stone (st) → Pound (lb)

Quick reference table

Stone (st)Pound (lb)
1 stone14 lb
2 stone28 lb
5 stone70 lb
10 stone140 lb
25 stone350 lb
50 stone700 lb
100 stone1400 lb

Glossary

Stone (st)

A stone is exactly 14 pounds or 6.35029318 kg, used in the United Kingdom and Ireland for personal body weight (e.g. "11 st 4 lb"). It is rarely used in the United States, where pounds are reported directly. The stone is not used in scientific or commercial weighing — only in everyday colloquial body-weight reporting.

Pound (lb)

A pound (avoirdupois) is exactly 0.45359237 kg by the international 1959 yard-and-pound agreement. It is the everyday US/UK unit for body weight, groceries, gym plates and shipping. Sixteen ounces make one pound; fourteen pounds make one stone (UK only). The symbol "lb" comes from Latin "libra".

Metric system (SI)

The metric system is a decimal system of measurement built around the kilogram for mass, the meter for length and the second for time, with multiples and submultiples expressed as powers of ten (milligram, gram, tonne). Adopted in France in 1799 and codified internationally as the International System of Units (SI) in 1960, it is now the official system in nearly every country and the standard in science.

Imperial / US Customary system

The imperial system is the historical English system of weights and measures whose mass units are the ounce, pound, stone and ton (16 oz = 1 lb, 14 lb = 1 stone, 2,000 lb = 1 US short ton). Codified by the British Weights and Measures Act of 1824 and aligned with US Customary by the 1959 international yard-and-pound agreement (1 lb = 0.45359237 kg exactly), it is still used in the United States and the United Kingdom for everyday weights.

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