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Kilograms to Stone and Pounds

With the pounds remainder, the way it is actually said.

Inputs
kg

The number of kilograms to convert.

Stone
11.02st
Spoken as
11 st 0.3 lb
In pounds
154.32lb
50 kg
7.87st
65 kg
10.24st
80 kg
12.6st
100 kg
15.75st
stone = kilograms ÷ 6.35029

1 kg = 0.157473 st

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Divide kilograms by 6.35029 for stone. 70 kg is 11.02 stone — normally said as 11 stone 0.3 pounds, since a stone is 14 pounds and the remainder is what people quote.

How to use KG to Stone Converter

  1. Enter the weight in kilograms. Decimals are fine.
  2. Read the stone and pounds. The decimal figure and the spoken form are both shown.

About converting kilograms to stone

The stone is a British and Irish unit used for one purpose: the weight of people. Nothing else is measured in it, which makes it unusual among surviving imperial units and explains why conversion tools for it exist almost entirely in a health and fitness context. A stone is fourteen pounds, or 6.35029 kilograms. The fourteen is the detail that trips up decimal conversions. Divide kilograms by 6.35 and you get a number like 11.02 stone, which nobody would ever say aloud. The spoken form is stone and pounds — eleven stone and a bit — and converting the decimal part means multiplying by fourteen, not ten. Reading 11.5 stone as eleven stone five pounds is a mistake of two pounds, and it happens often enough to be worth the separate row. The unit persists mainly because it happens to fit adult body weight in convenient numbers. Most adults fall between eight and eighteen stone, so a single figure with one decimal covers the useful range, whereas the same weights in pounds run from about 110 to 250 and in kilograms from 50 to 115. Familiarity does the rest. Medical settings in the same countries use kilograms exclusively, since drug dosing is calculated per kilogram, so anyone who has been weighed at a clinic and at home has two numbers for the same body.

Frequently asked questions

How many pounds in a stone?
Fourteen. This is why a decimal stone figure is nearly useless in conversation: 0.5 stone is seven pounds, not five, so reading 11.5 as eleven stone five is wrong by two pounds.
Who still uses stone?
Britain and Ireland, and almost exclusively for body weight. It is not used for anything else, not used in the United States even for people, and not used anywhere in medicine or science — which is why clinical charts are in kilograms.
What is 70 kg in stone?
About 11 stone and 0.3 pounds. For a rough conversion in your head, divide by six and take a little off — accurate to within a few percent, which is enough to picture a figure you have been given in the other system.
Is a US pound the same as a British pound?
Yes, both are exactly 0.45359237 kilograms by international agreement since 1959. It is only the stone that differs in usage, and the American customary system simply has no equivalent — American weights are quoted in pounds all the way up.

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