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Density and Mass

lbtost

Convert pounds (avoirdupois) (lb) to stones (st).

Factor1 lb = 0.07142861 st

Converter

lb

Accepts numbers or expressions, e.g. 150 + 14.7

Result
12st

Rendered to 6 significant figures.

Formula

Formula
st = lb × 0.07142861

Multiply any value in pounds (avoirdupois) by 0.07142861 to obtain the value in stones.

Worked example

Convert 168 lb to st.

  1. 01Start with 168 lb.
  2. 02Multiply by the conversion factor: 168 × 0.07142861 = 12 st.
Result168 lb = 12 st

Conversion table

lbst
10.071429
20.14286
50.35714
100.71429
201.4286
503.5714
1007.1429
20014.286
50035.714
100071.429

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb to st?
1 lb equals 0.07142861 st. To convert, multiply the value in pounds (avoirdupois) by 0.07142861.
How do I convert 1 lb to st?
1 lb = 0.0714286 st. For any value, multiply by 0.07142861.
How do I convert st back to lb?
Divide by the same factor — or equivalently, multiply by 13.99999. So 1 st = 14 lb.
When would I need to convert pound (avoirdupois) to stone (UK avoirdupois)?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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