Kilograms to Stone Converter
Convert metric kilograms (kg) to imperial stone and pounds (st & lbs) instantly. Primarily used in the UK and Ireland for tracking body weight, athletic weight classes, and sports monitoring.
Stone Resut (st & lbs)
The "Stone" Standard
While most of the world uses kilograms or pounds, the United Kingdom and Ireland retain the "Stone" (st) for human body mass. One stone is equivalent to exactly 14 pounds. This hybrid system uses stone for large segments and pounds for the remaining fractional weight.
What is a Stone?
A stone is an imperial unit of mass equal to 14 pounds (approx. 6.35 kg). It was historically used for various commodities but is now almost exclusive to personal weight.
What is a Kilogram?
The SI base unit of mass. 1 kilogram is defined by the Planck constant and is the primary unit for health records globally.
Conversion Formula
Logic Path
Total Lbs = kg × 2.20462
Stone = ⌊ Total Lbs ÷ 14 ⌋
Remainder = Total Lbs % 14Kg to Stone Reference Table
Kilograms (kg) Stone & Lbs 50 kg 7 st 12.3 lbs 60 kg 9 st 6.3 lbs 70 kg 11 st 0.3 lbs 80 kg 12 st 8.3 lbs 90 kg 14 st 2.3 lbs 100 kg 15 st 10.4 lbs Athletic Weight Divisions (MMA/Boxing)
Division Metric (kg) Imperial (st & lbs) Flyweight 52 kg 8 st 2.6 lbs Featherweight 57 kg 8 st 13.7 lbs Lightweight 63.5 kg 10 st 0.0 lbs Welterweight 70 kg 11 st 0.3 lbs Middleweight 77 kg 12 st 1.8 lbs Light Heavyweight 84 kg 13 st 3.2 lbs Heavyweight 93 kg 14 st 9.0 lbs Weight FAQ