Stones to Ounces Converter

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Convert stones to ounces via the imperial chain 1 stone = 14 lb = 224 oz. A 10-stone weight is 2,240 oz; a 12-stone weight is 2,688 oz. Niche but useful when a UK body-weight stone reading needs to be expressed at ounce precision — for example totalling per-portion ounce intake against a stone-level monthly body-weight target. Browser-local.

Stone (st)
Ounce (oz)

Stone (st) → Ounce (oz)

Quick reference table

Stone (st)Ounce (oz)
1 stone224 oz
2 stone448 oz
5 stone1120 oz
10 stone2240 oz
25 stone5600 oz
50 stone11200 oz
100 stone22400 oz

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.

Ounce (oz)

An ounce (avoirdupois) is one sixteenth of a pound, defined as exactly 28.349523125 g since 1959. It is the dominant unit for US food packaging, beverages, postal letters and personal-care products. One fluid ounce of water at 4 °C weighs almost exactly one avoirdupois ounce — a coincidence that helped the unit survive in modern US recipes.

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.

Related tools

Ounces to Stones
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Convert stones to pounds — 1 stone = 14 lb
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Convert pounds to ounces — 1 lb = 16 oz
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