Convert Kilograms (kg) to Stones (st)
1 kilogram equals 0.157473 stones.
Kilogram to Stone Converter
What Is a Kilogram?
The kilogram (kg) is the SI base unit of mass, defined since 2019 by the Planck constant. It is the global standard for mass measurement in science, medicine, and commerce. Clinical scales in the UK display kilograms despite everyday use of stones.
What Is a Stone?
The stone (st) is a traditional British unit of mass equal to exactly 14 pounds (6.35029318 kg). It is primarily used in the UK and Ireland for expressing human body weight in everyday conversation, even though official records use kilograms.
Kilograms to Stones Formula
The conversion factor derives from the stone definition:
stones = kilograms ÷ 6.35029318 exact
Or equivalently: stones = kilograms × 0.15747. Since 1 stone = 14 lb and 1 lb = 0.45359237 kg, the factor is exact.
Worked Example
Convert 80 kg to stones:
- Divide: 80 ÷ 6.35029 = 12.60 stone
- In stones and pounds: 12 st + (0.60 × 14) = 12 st 8.4 lb
For the exact stones-and-pounds breakdown, use our kg to stones and pounds converter.
Quick Estimation
Divide kg by 6.35 — or roughly divide by 6 and subtract 5%. Example: 80 kg ÷ 6 = 13.3, minus 5% ≈ 12.6 st (actual: 12.60 st). Quick anchors: 50 kg ≈ 7.9 st, 60 kg ≈ 9.4 st, 70 kg ≈ 11.0 st, 80 kg ≈ 12.6 st, 90 kg ≈ 14.2 st, 100 kg ≈ 15.7 st.
Common Use Cases
- UK gym and fitness: Scales display kg, but members think in stones. 80 kg = 12 st 8 lb.
- Weight loss targets: UK programmes set goals in stones. "Lose 1 stone" = lose 6.35 kg.
- Bathroom scales: Digital scales showing 11.4 st means 11 st + (0.4 × 14) = 11 st 5.6 lb.
Frequently Asked Questions
How many stones are in a kilogram?
1 kg ≈ 0.1575 stone. To convert, divide kg by 6.35. Example: 70 kg ÷ 6.35 = 11.02 stone.
What is 70 kg in stone?
70 kg = approximately 11.02 stone, or 11 stone 0.3 lbs in UK everyday usage.
Why do bathroom scales show decimal stones?
Digital scales use decimal for precision. To convert: multiply the decimal part by 14 to get pounds. Example: 11.4 st = 11 st 5.6 lb.
Is stone used outside the UK?
Ireland also uses stones for body weight. Australia and Canada abandoned stones decades ago. The US uses pounds but not stones.
Common Kilogram to Stone Conversions
| Kilogram | Stone | Actions |
|---|---|---|
| 50 kilograms | 7.87365 stones | |
| 60 kilograms | 9.44838 stones | |
| 65 kilograms | 10.2357 stones | |
| 70 kilograms | 11.0231 stones | |
| 75 kilograms | 11.8105 stones | |
| 80 kilograms | 12.5978 stones |
| Kilogram | Stone | Actions |
|---|---|---|
| 85 kilograms | 13.3852 stones | |
| 90 kilograms | 14.1726 stones | |
| 95 kilograms | 14.9599 stones | |
| 100 kilograms | 15.7473 stones | |
| 110 kilograms | 17.322 stones | |
| 120 kilograms | 18.8968 stones |
Kilograms to stones Conversion Table
Reference table with common kilograms to stones conversions. All values calculated with high precision.
Kilograms to Stones Table
0.001 to 5
Kilograms to Stones Table
10 to 1000000
Stones to Kilograms Table
0.0001 to 12
Stones to Kilograms Table
1 to 100000
Looking for the reverse? Convert Stone to Kilogram
Related Weight (Mass) Converters
Explore other weight (mass) conversion tools:
Need a combined format?
- Kg to Pounds and Ounces — combined lb + oz format
- Kg to Stones and Pounds — UK body weight format
Related in other categories:
- G-force to m/s² — Force = mass × acceleration (F = ma)
