kg to stone converter

How to convert kilograms to stone

Divide kilograms by 6.35029318 to get stone. Seventy kilograms is 11.023 stone. The usual way to say that in the UK is a whole number of stone plus pounds: the fraction times 14. 0.023 × 14 is about 0.32 lb, so 70 kg is 11 stone and roughly a third of a pound, not 11 stone 3. People hear '11 stone' and drop the fraction. The converter keeps it. If you need a clean stone-and-pounds line, take the integer stone and multiply the remainder by 14.

A clinic weight in kilograms told to someone who only knows stone, or a historic record. 80 kg is 12.598 stone, about 12 stone 8.4 lb. 100 kg is 15.747 stone, about 15 stone 10.5 lb. The pounds page is the one to use if the listener actually wanted pounds. Stone is optional packaging around the same pound.

Exact formula

Formulastone = kilograms ÷ 6.35029318

stone = kilograms ÷ 6.35029318 One kg is 0.157473044418 st. Ten kg is 1.57473044418 st. The worked example below uses that same conversion.

Conversion table

The kilograms column runs from 10 kg (1.575 st) through 200 kg (31.495 st).

Worked example: Kilograms to Stone

Seventy kilograms is 11.023 st. The digits after the decimal are fractions of a stone, not leftover pounds. Multiply that fraction by 14 to speak it as pounds. 0.023 × 14 is about a third of a pound, so 70 kg is 11 stone and a bit, not 11 stone 3. Eighty kilograms is 12.598 st, about 12 stone 8 lb. One hundred kilograms is 15.747 st. Dividing by 6.35 instead of 6.35029318 drifts. Rounding to the nearest stone hides up to 3 kg.

Pitfalls for kilograms to stone

• The digits after the decimal are fractions of a stone, not leftover pounds. Multiply them by 14 to get pounds.
• Dividing by 6.35 instead of 6.35029318 drifts. Use the factor the table stores.
• A 'stone' of 14 lb is the only stone here. Do not apply it to flour or to a European 'stein'.
• Rounding to the nearest stone hides up to half a stone, which is 3 kg. Say the pounds.