Units

Stones and pounds to kilograms

Stone plus pounds, as people say a weight, into kilograms.

Calculated in this page. Nothing you type is sent to a server.

Kilograms66.68 kg
Pounds in total147 lb

One stone is 14 pounds, and one pound is 0.45359237 kg, so one stone is 6.35029318 kg. Fourteen pounds in the pounds box is the next stone. A clinic form in Ireland is usually in kilograms. Use the kilograms page when you already have that figure.

The factor is exact. The figure on screen is rounded for reading.

How to use it

  1. Enter the stone, then the pounds that sit alongside it. Pounds are usually 0 to 13.
  2. Read the kilograms. The page also shows the total in pounds, at 14 pounds to the stone.
  3. Use the kilograms-to-stones page when the figure you already have is in kilograms.

How a stone is defined

A stone is 14 pounds. A pound is exactly 0.45359237 kg, so a stone is exactly 6.35029318 kg. Ten stone 7 pounds is 147 pounds, which is 66.68 kg to two decimal places. The converter keeps the exact factor and rounds the kilograms for the screen.

People in the UK and in Ireland still say body weight in stone and pounds. A clinic, a passport form or a set of scales in Ireland will usually ask for kilograms. This page starts from the spoken weight. Fourteen in the pounds box is another stone, and the page still adds it up.

What this page is for

It answers “what is 11 stone 4 in kilos?”. It is the combiner: stone plus leftover pounds, one total. The kilograms to stones page does the opposite job, splitting a clinic figure into the way you would say it.

Bathroom scales that show both units have already done this. If yours only shows one, the factor above is the one to trust. Cooking weights in pounds are the same pound. A US recipe pound and a UK pound are the same avoirdupois pound.

Questions

How many kilograms in a stone?

6.35029318 kg. That is 14 × 0.45359237.

What is 10 stone 7 in kilograms?

66.68 kg when rounded to two decimal places. The exact product is 147 × 0.45359237 kg.

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