Stones and Pounds to Kilograms
British weight comes in two parts — 'eleven stone seven' — and converting that to kilograms normally means two steps. This converter takes stones and pounds together (11 st + 7 lb) and returns the exact kilogram value, or runs in reverse from kilograms to the stone-and-pounds split.
One stone is 14 pounds and 6.35029318 kilograms, so the math is simple twice over — but doing it while standing on a scale is exactly the wrong time for arithmetic. Type, read, done.
How to use
- Enter the stones and the extra pounds separately — 11 st 7 lb, not 11.5 st.
- The kilogram answer updates instantly; switch to enter kg and get the split back.
- Check the pounds-only equivalent below for US-style comparisons.
Frequently asked questions
How many kg is 11 stone 7 pounds?
11 stone = 69.85 kg; 7 pounds = 3.18 kg; total is about 73.03 kg. The converter does the two-part arithmetic in one step.
How do I convert stones and pounds to kilograms?
Multiply stones by 6.35029318, multiply pounds by 0.45359237, and add the two. Or just enter both numbers above — same answer, no arithmetic.
Why do Brits use two units for one weight?
History: the stone was the traditional trade weight for centuries and survived metrication for body weight specifically. So a person is '11 stone 7', never '161 pounds' — even though it is the same thing.
What is 70 kg in stones and pounds?
About 11 stone and 0.2 pounds (70 kg is 11.02 stone, which is 11 st plus a fraction of a pound). Enter 70 kg in the reverse direction to see the exact split.