Quick Answer: Kilograms to Stones
One kilogram is approximately 0.1575 stones (1 kg ≈ 0.1575 st).
Conversely, 1 st ≈ 6.35 kg.
Formula: st = kg ÷ 6.35029318
Worked examples
- 50 kg ≈ 7.874 st
- 60 kg ≈ 9.448 st
- 70 kg ≈ 11.02 st
Method and limitations
Divide kilograms by 6.35029318. The calculator gives decimal stones; multiply the decimal part by 14 for the pounds. Calculations use full-precision constants; answers in this box are rounded for readability (≈ marks a rounded value) and the calculator shows up to 9 significant figures. A stone is exactly 14 avoirdupois pounds (6.35029318 kg). Body weights are usually written as stones plus pounds (11 st 4 lb = 158 lb), which is not the same as decimal stones (11.4 st = 11 st 5.6 lb).
Each factor is exact by definition, derived from exact definitions, or a documented conventional value — see the methodology and sources.
Conversion Formula
Divide kilograms by 6.35029318. The calculator gives decimal stones; multiply the decimal part by 14 for the pounds.
Complete Guide to Kilograms to Stones Conversion
What is a kilogram?
The kilogram (kg) is the SI base unit of mass.
What is a stone?
The stone (st) is 14 avoirdupois pounds, exactly 6.35029318 kg.
How the Conversion Works
st = kg ÷ 6.35029318. Stones and pounds: whole stones = integer part; pounds = decimal part × 14.
Step-by-Step Conversion Guide
Follow these steps to convert kilograms to stones manually:
Start with your value in kilograms
Example: You want to convert 70 kg
Apply the conversion formula
Use the formula: st = kg ÷ 6.35029318
Calculate the result
70 kg = 11.0231 st
Verify your answer
Use our calculator above to double-check your manual calculation.
Quick Mental Math Tip
Divide by 6.35, or roughly by 6⅓: 76 kg ≈ 12 st (exact 11.97 st).
Common Conversions
| Kilograms (kg) | Stones (st) | Stones → Kilograms |
|---|---|---|
| 50 kg | 7.87365 | 50 st = 317.515 kg |
| 60 kg | 9.44838 | 60 st = 381.018 kg |
| 70 kg | 11.0231 | 70 st = 444.521 kg |
| 80 kg | 12.5978 | 80 st = 508.023 kg |
| 90 kg | 14.1726 | 90 st = 571.526 kg |
| 100 kg | 15.7473 | 100 st = 635.029 kg |
| 110 kg | 17.322 | 110 st = 698.532 kg |
| 120 kg | 18.8968 | 120 st = 762.035 kg |
| 130 kg | 20.4715 | 130 st = 825.538 kg |
| 150 kg | 23.621 | 150 st = 952.544 kg |
Popular Kilograms to Stones Conversions
Tap any value to load it into the calculator above.
When You'll Need This Conversion
Metric weight in stones and pounds
Express a weight measured in kg in the stones-and-pounds form commonly used in the UK and Ireland.
Common Mistakes to Avoid
Writing 12.598 st as 12 st 5.98 lb
The decimal is a fraction of a stone, not pounds.
0.598 × 14 = 8.4 lb → 12 st 8.4 lb.
Frequently Asked Questions
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Conversion factors on this page are either exact by definition, derived from exact definitions, or conventional values in documented use. Each is listed with its source in our conversion methodology and sources, which cites the BIPM SI Brochure, NIST Special Publication 811 and the relevant IEC or national standards. Results are rounded for display only; calculations use full precision.