Stones to Kilograms Converter st → kg

1 stone (st) = 6.35029318 kilograms (kg). Type a value below — the conversion happens instantly, entirely on your device.

From

1 st = 6.35029318 kg

Precision

1 stones = 6.3502932 kilograms

1 × 6.35029 = 6.3502932

1 st equals 6.35029 kg, so multiplying by 6.35029 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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How to convert stones to kilograms

kilograms = stones × 6.35029318 — multiply the stone value by 6.35029.

Example: 10 st = 63.5029 kg.

To convert the other way: stones = kilograms ÷ 6.35029318 — or use the dedicated kg to st converter .

Stones to Kilograms conversion table

Stones (st)	Kilograms (kg)
0.1	0.63502932
0.25	1.5875733
0.5	3.1751466
1	6.3502932
2	12.700586
3	19.05088
4	25.401173
5	31.751466
6	38.101759
7	44.452052
8	50.802345
9	57.152639
10	63.502932
15	95.254398
20	127.00586
25	158.75733
30	190.5088
40	254.01173
50	317.51466
75	476.27199
100	635.02932
250	1587.5733
500	3175.1466
1000	6350.2932

About the units

What is a stone?

A stone (st) equals 14 pounds or exactly 6.35029318 kilograms. Body weight in the United Kingdom and Ireland is customarily given in stones and pounds.

What is a kilogram?

The kilogram (kg) is the SI base unit of mass, defined since 2019 by fixing the Planck constant. It is the standard unit for body weight and goods in most of the world.

Frequently asked questions

How many kilograms are in 1 stone?

1 stone (st) = 6.35029318 kilograms (kg).

What is the formula to convert stones to kilograms?

kilograms = stones × 6.35029318 — multiply the stone value by 6.35029.

How do I convert st to kg without a calculator?

Multiply by 6.35 for a close estimate. Exact factor: 1 st = 6.35029318 kg.

Is this st-to-kg converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.