Convert

Stone to Kilogram

Exact answer: 1 st = 6.35029318 kg (exact defined factor)

Stone and Kilogram describe the same quantity from the Mass family but come from different systems of units. The factor is defined exactly. Mass figures range from micrograms in analytics to tonnes in freight.

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UnitCloud is a local measurement lab for everyday work, engineering, IT, energy, mobility and design. Every conversion shows result, formula, base unit, rounding and the common mistake.

What do you want to convert?

From1 st

Result6.350293 kg

Factor1 st = 6.35029318 kg

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 st = 6.350293 kg

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

Pound is not always the same local unit. UnitCloud uses international avoirdupois values.

03Base unit: g

1 st = 6350.29318 g. Then the value is converted through the base unit g into Kilogram.

Table

Stone to Kilogram
Stone	Kilogram
1	6.350293
2	12.700586
5	31.751466
10	63.502932
12	76.203518
20	127.005864

Formula

1 st = 6350.29318 g. Then the value is converted through the base unit g into Kilogram.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Related conversions

Pound to Kilogramlb → kgMass Kilogram to Poundkg → lbMass Gram to Kilogramg → kgMass Kilogram to Gramkg → gMass

Search and practice paths

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Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources reviewed: September 2026. Mass. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Stone to Kilogram?

1 st = 6.35029318 kg

Which formula does Stone to Kilogram use?

1 st = 6350.29318 g. Then the value is converted through the base unit g into Kilogram.

What is the most common mistake?

Pound is not always the same local unit. UnitCloud uses international avoirdupois values.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.