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Stone to Kilogram Converter

Instant, two-way conversion across common engineering units.

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1 st = 6.3502932 kg(Stone → Kilogram)

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Converting stone to kilograms

To convert stone to kilograms, multiply the value by 6.3502932. Mass conversions support load take-offs, steel tonnage and transport limits, where imperial and metric figures often appear in the same package.

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To scale
1 stone = 6.3502932 kilograms.
1 kilogram = 0.15747304 stone.

Stone (st)

The stone (st) equals 14 pounds and is used mainly in the UK.

Origin
A traditional British trade weight, fixed at 14 avoirdupois pounds.
Where it is used
Used informally in the UK, rarely in technical documentation.
Relation to SI
1 st = 6.35029318 kg exactly.

Kilogram (kg)

The kilogram (kg) is the SI base unit of mass.

Origin
Once defined by a platinum-iridium prototype, it has been defined since 2019 by fixing the Planck constant.
Where it is used
Used for material densities, structural loads, equipment weights and specifications worldwide.
Relation to SI
The kilogram is the SI base unit; all other mass units here derive from it.

Frequently asked questions

How many kilograms are in one stone?

1 st equals 6.3502932 kg.

How do I convert stone to kilograms?

Multiply the value by 6.3502932. For example, 10 st equals 63.502932 kg.

How do I convert back from kilograms to stone?

1 kg equals 0.15747304 st. The converter above works in both directions, so you can type into either field.

Is this converting mass or weight?

Mass. Kilograms and pounds measure mass; force units such as newtons or kilonewtons are a separate quantity used in structural load calculations.

What is the difference between a US ton and a metric tonne?

A US short ton is 2,000 lb, about 907 kg, while a metric tonne is exactly 1,000 kg. The imperial long ton is 2,240 lb, about 1,016 kg.

Is this mass converter free to use?

Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.

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