lbs to Stone Converter — Pounds to Stones
Convert a weight in pounds to stones (and remaining pounds) with the exact "X stone Y lb" format used for body weight in the UK and Ireland. Also shows kilograms.
lbs
11 stone exactly
- 1
Whole stones
floor(154 ÷ 14) = 11One stone = 14 avoirdupois pounds exactly. - 2
Remaining pounds
154 − 11 × 14 = 0 - 3
Decimal stones
154 ÷ 14 = 11
How does this calculator work?
Divide pounds by 14 to get stones; the remainder is the extra pounds (e.g. 161 lbs = 11 st 7 lb since 11 × 14 = 154, 161 − 154 = 7). One stone = 14 lbs = 6.35029 kg exactly. Stones are used for body weight in the UK and Ireland but rarely elsewhere.
Formula
How this is calculated
One stone is defined as exactly 14 avoirdupois pounds — a unit of mass still widely used for adult body weight in the United Kingdom and Ireland, though not in the US or most metric countries. The conversion divides the total pounds by 14: the whole-number part is the stones, and the fractional part, multiplied back by 14, gives the remaining pounds.
For example, 154 pounds ÷ 14 = 11.0 stone exactly — 11 stone and 0 lb. 160 pounds ÷ 14 = 11.4286 stone = 11 stone and 6 lb (since 0.4286 × 14 = 6). Kilograms follow from 1 lb = 0.45359237 kg (exact), and total ounces from 1 lb = 16 oz.
The stone unit is not used for industrial, scientific or dietary purposes — it is almost exclusively a body weight unit. If you need to compare with metric readings from a scale, use the kilograms figure shown in the results. Body mass index (BMI) is always calculated from kilograms and height in metres in clinical settings, even in the UK.
Frequently asked questions
Exactly 14 pounds. So to convert pounds to stones, divide by 14. The stone is defined as 14 avoirdupois pounds or 6.35029318 kg exactly.
Stones are used for adult body weight primarily in the United Kingdom and Ireland. Most other countries (including the US) use pounds or kilograms exclusively. Even in the UK, medical and clinical contexts increasingly use kilograms.
11 stone × 14 + 4 = 154 + 4 = 158 lb. Then 158 × 0.45359237 = 71.67 kg. Or enter 158 lbs in the calculator above to get the result instantly.
Also known as
TG we-Calculate Editorial Team. (2026). lbs to Stone Converter — Pounds to Stones [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/lbs-to-stone-converter
TG we-Calculate Editorial Team. "lbs to Stone Converter — Pounds to Stones." TG we-Calculate. 2026. https://we-calculate.com/calculator/lbs-to-stone-converter.
TG we-Calculate Editorial Team, "lbs to Stone Converter — Pounds to Stones," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/lbs-to-stone-converter
@misc{wecalculate_lbs_to_stone_converter, title = {lbs to Stone Converter — Pounds to Stones}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/lbs-to-stone-converter}}, year = {2026}, note = {TG we-Calculate} }
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