How do I convert Stone (st) to Kilogram (kg)?

1 st equals 6.350293 kg using SI-based conversion and precise factors.

What is the formula to convert Stone (st) to Kilogram (kg)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/st-to-kg/1

Category: Mass

Value From To Precision

6.350293 kg

1 st = 6.350293 kg

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Mass and applying exact factors where applicable.

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Mass quantifies matter. The SI kilogram is defined via fundamental constants.

Stone (st)

14 lb; still used for body weight in the UK/Ireland.

History: Varied historically by commodity; later standardized.

Kilogram (kg)

SI base unit of mass defined via Planck’s constant.

History: Since 2019 defined through h; before that, by the IPK artifact.