Instant kg to stone calculator
Enter your weight in kilograms to convert it to stones (st), stone-and-pounds format, and total pounds.
Tip: press Enter while in the input field to calculate instantly.
If you’ve ever looked at UK health charts, gym plans, or older medical records, you’ve probably seen weight listed in stone instead of kilograms. This page gives you a quick, reliable kg to stone conversion and explains exactly how the math works so you can convert weights confidently anytime.
How to convert kg to stone (quick answer)
The conversion is straightforward:
So if your weight is 70 kg:
- 70 ÷ 6.35029318 = 11.02 stone (rounded)
- That is roughly 11 stone 0.32 pounds
Many people prefer the second format (stone + pounds) because it is easier to read in everyday conversation.
How to use this kg to stone calculator
- Type a value in kilograms (decimals are allowed).
- Click Convert to Stone.
- Read your result in:
- Decimal stone (example: 11.0231 st)
- Stone and pounds (example: 11 st 0.32 lb)
- Total pounds (example: 154.32 lb)
This is useful for fitness logs, doctor appointments, travel forms, and comparing weight measurements across countries.
Why does the stone unit still matter?
The stone is a traditional unit widely used in the UK and Ireland for body weight. While kilograms are standard in most scientific and international settings, many people still think naturally in stone, especially for personal weight tracking. That’s why a kilograms to stone converter remains practical.
When stone is commonly used
- UK doctor or clinic conversations
- British fitness forums and weight-loss groups
- Online communities discussing body weight in st/lb
- Comparing older records that were originally entered in stone
kg to stone formula explained
A stone is equal to 14 pounds, and one kilogram is approximately 2.20462262 pounds. Combining these gives:
1 kilogram = 0.157473 stone
Decimal stone vs stone-and-pounds
There are two normal output styles:
- Decimal stone: 80 kg = 12.598 st
- Stone and pounds: 80 kg = 12 st 8.37 lb
Both are correct. Choose the one that matches your goal. Medical calculations usually prefer decimal values, while everyday use often prefers st/lb.
Common kg to stone conversion chart
| Kilograms (kg) | Stone (decimal) | Stone + Pounds |
|---|---|---|
| 50 kg | 7.87 st | 7 st 12.23 lb |
| 55 kg | 8.66 st | 8 st 9.25 lb |
| 60 kg | 9.45 st | 9 st 6.28 lb |
| 65 kg | 10.24 st | 10 st 3.30 lb |
| 70 kg | 11.02 st | 11 st 0.32 lb |
| 75 kg | 11.81 st | 11 st 11.35 lb |
| 80 kg | 12.60 st | 12 st 8.37 lb |
| 85 kg | 13.39 st | 13 st 5.39 lb |
| 90 kg | 14.17 st | 14 st 2.42 lb |
| 100 kg | 15.75 st | 15 st 10.46 lb |
Tips for accurate weight tracking
Whether you track in kilograms, stone, or pounds, consistency matters more than the unit itself.
- Weigh yourself at the same time each day (or week).
- Use the same scale and similar clothing conditions.
- Track trends over time instead of single-day spikes.
- Record both kg and stone if you share updates with people in different countries.
- Use one rounding style consistently (for example, 1 or 2 decimal places).
Frequently asked questions
How many kilograms are in 1 stone?
1 stone = 6.35029318 kg.
How many stone is 70 kg?
70 kg is about 11.02 stone, or approximately 11 st 0.32 lb.
Can I use this calculator for body weight and luggage?
Yes. The math is identical for any mass conversion. Just make sure your source number is in kilograms.
Why does my result include both stone and pounds?
Because many people in the UK communicate weight that way, such as “11 stone 4 pounds,” rather than using decimal stone values.
Final thoughts
A dependable kg to stone calculator saves time and eliminates conversion errors, especially if you switch between metric and UK-style weight units. Bookmark this page and use it whenever you need to convert kilograms to stone quickly and accurately.