Unit Conversions & Measures
Pounds to Stones Converter
Convert pounds to stones with the exact factor, the working shown step by step and a plain-English explanation.
Your inputs
Change any value to update the result instantly.
Stones
7.142857 st
Conversion factor
1 lb = 0.0714285714 st
Value in kilogram (internal base unit)
45.359237 kg
Reverse conversion check
7.142857 st = 100 lb
Rounded for everyday use
7.14 st
This conversion crosses the US customary and imperial systems, which share unit names but not always the same size.
What this calculator does
Converts a measurement given in pounds into stones using the defined conversion factor.
What your result means
The same quantity expressed in st instead of lb. Nothing about the measurement itself changes.
Formula and working
st = lb × 0.0714285714
- 1
Start with your value
100 lb
- 2
Convert to kilogram
100 × 0.45359237 = 45.359237 kg
- 3
Convert into stones
45.359237 ÷ 6.35029318 = 7.142857 st
- 4
Result
100 lb = 7.142857 st
Frequently asked questions
Symbols and assumptions
- lb
- Input unit — pound
- st
- Output unit — stone
- kg
- Base unit used internally for mass and weight
- • Both units measure mass and weight, so the physical quantity is unchanged by the conversion.
- • The relationship is exactly linear: 1 lb = 0.0714285714 st.
- • Values are converted through the SI base unit for this quantity rather than pair by pair.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • A unit conversion changes how a number is expressed, not how it was measured — the answer can never be more accurate than the value entered.
- • Displayed figures are rounded for readability; the full stored precision of the st value is used in every onward calculation.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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