Kilograms to Stone
The kilogram is the SI base unit of mass, defined today by the fixed value of the Planck constant. A stone is 14 pounds, about 6.35 kilograms, the traditional unit for body weight in the UK and Ireland. 1 kg equals ≈0.157473 st, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to mass, measured here against mass's base unit (kg) — every other mass unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
st = kg × ≈0.157473
kg = st × ≈6.35029
Worked example: 5 kg × ≈0.157473 = ≈0.787365 st.
Conversion table
| Kilogram (kg) | Stone (st) |
|---|---|
| 1 kg | ≈0.157473 st |
| 2 kg | ≈0.314946 st |
| 3 kg | ≈0.472419 st |
| 5 kg | ≈0.787365 st |
| 10 kg | ≈1.57473 st |
| 20 kg | ≈3.14946 st |
| 25 kg | ≈3.93683 st |
| 50 kg | ≈7.87365 st |
| 100 kg | ≈15.7473 st |
| 250 kg | ≈39.3683 st |
| 500 kg | ≈78.7365 st |
| 1,000 kg | ≈157.473 st |
Frequently asked
- How many Stone in a kilogram?
- 1 kg equals ≈0.157473 st.
- How do I convert Kilograms to Stone?
- Multiply the value in kg by ≈0.157473 to get st. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Kilogram and Stone are both defined by a fixed conversion factor to mass's base unit (kg), so the result shown is exact to the precision displayed, not an approximation.