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42 Pounds to Stone

42 pounds equals 3 stone. Use the formula, worked example, and conversion table below to check the math.

42 lb = 3 st
lb ÷ 14 = st
Try: 37 lb to st 41 lb to st 43 lb to st 47 lb to st
42 lb is also
42 lb = 19.05 kg 42 lb = 19,050.88 g 42 lb = 672 oz 42 lb = 19,050,879.54 mg 42 lb = 0.0191 t
lb
3 st

Step-by-Step Calculation

lb ÷ 14 = st
  1. Start with 42 lb
  2. Divide by 14: 42 ÷ 14 = 3
  3. Result: 42 lb = 3 st

This conversion factor (0.071429) is the same for every pound to stone calculation.

Pound to Stone Conversion Table

Pounds (lb) Stone (st)
1 lb 0.0714 st
2 lb 0.1429 st
5 lb 0.3571 st
10 lb 0.7143 st
15 lb 1.07 st
20 lb 1.43 st
25 lb 1.79 st
42 lb 3 st
50 lb 3.57 st
75 lb 5.36 st
100 lb 7.14 st
250 lb 17.86 st
500 lb 35.71 st
1,000 lb 71.43 st
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Frequently Asked Questions

42 pounds equals 3 stone.
The formula is: lb ÷ 14 = st. See the lb to st formula page for worked examples.
Use the stone to pounds converter. The reverse formula is: st × 14 = lb.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (lb ÷ 14 = st) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026