Convert pounds to stone

Formula: st = lbs × 0.071429

lbs to st quick reference table

Everyday lbs values, converted

• 45 lbs = 3.2143 st — a men's Olympic barbell in pounds.
• 50 lbs = 3.5714 st — the US airline checked-bag limit.
• 150 lbs = 10.7143 st — a common adult body-weight reference.
• 10 lbs = 0.714286 st — a pair of hand weights.

Where lbs to st comes up

Weight conversions show up at the gym, at the airline check-in desk, in recipes written for another country and at the doctor's office. Scales in one country are almost never labelled in the other country's unit, which is why the same figure has to be converted repeatedly.

Doing lbs to st in your head

Divide by 14 for a close estimate; the calculator above uses the full factor of 0.071429.

Precision and rounding

One pound is exactly 0.071429 stone under the current definitions of both units, so the only judgement call is how many digits you keep. Two decimal places is already finer than most household scales and tape measures can read, while engineering and medical work usually keeps the full factor and rounds once at the end rather than at every step.