How many grams are in one stone?

One stone equals approximately 6,350.29 grams. This is 14 pounds at 453.592 grams per pound.

How do I convert stones to grams?

Multiply stones by 6,350. For example, 10 stones equals about 63,503 grams or 63.5 kilograms.

Why do British people use stones for body weight?

Tradition. The stone has measured body weight in Britain for centuries, and the habit persists even though the UK officially adopted metric units in the 1970s. British people learn their weight in stones and pounds from childhood and find the metric alternative less intuitive.

Stones to Grams (st to g) Converter

1 st = 6,350.2932 g

1 Stone equals 6,350.2932 Grams (1 st = 6,350.2932 g). Convert Stones to Grams with formula, table, and examples.

One stone equals approximately 6,350 grams. The gram translation of the stone provides the most internationally accessible metric equivalent of the British body-weight unit. Knowing that one stone is roughly 6.35 kilograms allows anyone worldwide to understand British weight references encountered in literature, media, or medical records from the UK.

How to Convert Stones to Grams

g = st × 6,350.29318

Multiply the value in Stones by 6,350.29318

Take your value in Stones
Multiply by 6,350.29318
Read the result in Grams

Common Stones to Grams Conversions

Stones (st)	Grams (g)	Status
0.01 st	63.503 g
0.05 st	317.515 g
0.1 st	635.029 g
0.25 st	1,587.573 g
0.5 st	3,175.147 g
1 st	6,350.293 g
2 st	12,700.586 g
5 st	31,751.466 g
8 st	50,802.345 g
10 st	63,502.932 g
14 st	88,904.105 g
20 st	127,005.864 g
25 st	158,757.33 g
50 st	317,514.659 g

Good to Know About Stones to Grams Conversion

The stone-to-gram conversion is the key to understanding British body weight in metric terms. British culture discusses weight in stones the way American culture discusses it in pounds, and both stand apart from the metric world's kilogram standard. The factor of 6,350 grams per stone is the Rosetta Stone (no pun intended) for anyone trying to understand British weight references from outside the UK.

Stones to Grams: What You Need to Know

British expatriates, international medical professionals working with UK patients, and readers of British literature all need this conversion. British weight expressed as 'twelve stone three' makes no sense to a metric-trained audience without the knowledge that each stone is approximately 6.35 kilograms.

What is a Stone? st

A British unit of mass equal to 14 pounds or approximately 6.35 kilograms. Commonly used in the UK and Ireland for body weight.

Imperial body weight (UK/Ireland) horse racing

Learn more about Stone →

What is a Gram? g

A metric unit of mass equal to one thousandth of a kilogram. Widely used in cooking, nutrition labeling, and science.

Metric cooking nutrition labels postal weight

Learn more about Gram →

Going the other way? Use our Grams to Stones converter.

Stones to Grams FAQ

One stone equals approximately 6,350.29 grams. This is 14 pounds at 453.592 grams per pound.
Multiply stones by 6,350. For example, 10 stones equals about 63,503 grams or 63.5 kilograms.
Tradition. The stone has measured body weight in Britain for centuries, and the habit persists even though the UK officially adopted metric units in the 1970s. British people learn their weight in stones and pounds from childhood and find the metric alternative less intuitive.

Non-Frequently Asked Questions About Stones to Grams

Questions nobody should ask - but someone did.

11 stone equals about 69,853 grams or 69.85 kilograms. Whether this is 'a lot' depends on your height, build, and perspective. In grams, 69,853 sounds enormously heavy. In stone, 11 sounds perfectly normal. The unit choice dramatically affects the psychological impact of the same physical weight.
Because patients report their weight in stones and doctors translate to kilograms internally. The NHS officially works in metric, but asking a British patient 'how much do you weigh?' will almost always receive a stone-based answer. The dual system persists because it is easier to translate than to retrain an entire population.
Most would grudgingly switch to kilograms, as younger generations increasingly do already. But the stone would persist informally for decades, much as feet and inches persist for height despite metric standardization. Cultural measurement habits outlast official policy by generations.