Quick answer: To convert kg to stone and pounds, multiply the kilograms by 2.20462 to get pounds, divide by 14 to find the whole stones, then keep the leftover pounds. For example, 75 kg is 165.3 lb, which is 11 stone 11.3 lb. One kilogram is about 2.2 lb, and one stone is exactly 14 lb.
A GP surgery or gym printout gives your weight in kilograms, but the number that means something to you is in stones and pounds. The converter below does the whole job in one step, and the chart covers 40 to 150 kg. It is part of our guide to weight conversions, which links every stone, pound and gram tool on the site.
kg to stone and pounds
kg= st lb ( lb in total)How do you convert kg to stone and pounds?
Convert the kilograms to pounds first, then split the pounds into stones of 14. Going through pounds avoids the decimal-stone trap described in the next section.
- Find the total pounds. Divide the kilograms by 0.45359237 (or multiply by 2.20462). 75 kg ÷ 0.45359237 = 165.35 lb.
- Find the whole stones. Divide the pounds by 14 and ignore anything after the decimal point. 165.35 ÷ 14 = 11.81, so 11 whole stones.
- Work out the leftover pounds. Multiply the whole stones by 14 and subtract. 11 × 14 = 154, and 165.35 − 154 = 11.35 lb.
- Write the answer. 75 kg = 11 st 11.3 lb, or 11 st 11 lb if you round to the nearest pound.
Why is 11.81 stone not 11 stone 8 pounds?
Because the digits after the decimal point are a fraction of a stone, and a stone has 14 pounds, not 10 or 100. Dividing kilograms by 6.35 gives a correct answer in decimal stones, but reading “11.81” as “11 stone 8” or “11 stone 81” mixes two number systems.
To rescue a decimal-stone answer, multiply only the decimal part by 14: 0.81 × 14 = 11.3 lb. The same applies the other way. Half a stone is 7 lb, so 12.5 stone is 12 st 7 lb, not 12 st 5 lb. This single slip is behind most of the confusing figures people get from a calculator.
kg to stone and pounds chart (40 to 150 kg)
Pounds are rounded to one decimal place. For a value between two rows, add 2.2 lb for every extra kilogram.
| Kilograms | Stones and pounds | Total pounds | Kilograms | Stones and pounds | Total pounds |
|---|---|---|---|---|---|
| 40 kg | 6 st 4.2 lb | 88.2 lb | 100 kg | 15 st 10.5 lb | 220.5 lb |
| 45 kg | 7 st 1.2 lb | 99.2 lb | 105 kg | 16 st 7.5 lb | 231.5 lb |
| 50 kg | 7 st 12.2 lb | 110.2 lb | 110 kg | 17 st 4.5 lb | 242.5 lb |
| 55 kg | 8 st 9.3 lb | 121.3 lb | 115 kg | 18 st 1.5 lb | 253.5 lb |
| 60 kg | 9 st 6.3 lb | 132.3 lb | 120 kg | 18 st 12.6 lb | 264.6 lb |
| 65 kg | 10 st 3.3 lb | 143.3 lb | 125 kg | 19 st 9.6 lb | 275.6 lb |
| 70 kg | 11 st 0.3 lb | 154.3 lb | 130 kg | 20 st 6.6 lb | 286.6 lb |
| 75 kg | 11 st 11.3 lb | 165.3 lb | 135 kg | 21 st 3.6 lb | 297.6 lb |
| 80 kg | 12 st 8.4 lb | 176.4 lb | 140 kg | 22 st 0.6 lb | 308.6 lb |
| 85 kg | 13 st 5.4 lb | 187.4 lb | 145 kg | 22 st 11.7 lb | 319.7 lb |
| 90 kg | 14 st 2.4 lb | 198.4 lb | 150 kg | 23 st 8.7 lb | 330.7 lb |
| 95 kg | 14 st 13.4 lb | 209.4 lb |
Need the opposite direction? Our stone to kg chart lists every whole stone from 1 to 30 in kilograms, and the kg to lb converter gives pounds alone if you do not need stones.
When do you need to convert kg to stone in the UK?
Mostly when a reading in kilograms has to be compared with a weight you know in stones. Clinics, hospitals and many gym machines work in kilograms, while plenty of people still track their own weight at home in stones and pounds. Converting puts both readings on the same footing.
Remember that different scales can disagree by a little, and weight naturally varies through the day. When comparing, use the same scale at a similar time if you can. If you are monitoring weight for a health reason, the NHS BMI calculator accepts either unit, and your GP or practice nurse can advise on what the figures mean for you.
Frequently asked questions
What is 70 kg in stone and pounds?
70 kg is 11 stone 0.3 lb, which is 154.3 lb in total. In everyday terms it is just over 11 stone.
What is 80 kg in stone and pounds?
80 kg is 12 stone 8.4 lb, or 176.4 lb in total.
How many pounds are in a kilogram?
One kilogram is 2.20462 lb. The exact figure comes from the legal definition of the pound as 0.45359237 kg.
Can I just divide kg by 6.35?
Yes, but the result is in decimal stones. Multiply the part after the decimal point by 14 to turn it into pounds. For example, 11.81 stone is 11 stone 11.3 lb.
What is 100 kg in stone?
100 kg is 15 stone 10.5 lb, or 15.75 stone as a decimal.
Sources
- Weights and Measures Act 1985, section 1: the pound as 0.45359237 kg.
- NHS: calculate your body mass index.
- National Physical Laboratory, the UK’s national measurement institute.