Convert lbs to stone
Convert lbs to stone instantly. 1 lb = 0.071429 st. Formula, worked examples and a quick reference table.
Last updated
One pound equals 0.071429 stones. To convert any number of pounds to stones, multiply by 0.07142857.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Weight and mass conversions matter most in three places: shipping, where a rate band can turn on a single kilogram; cooking, where recipes cross between metric grams and imperial ounces; and personal weight, where Britain and Ireland use stones, the United States uses pounds, and everywhere else uses kilograms. Strictly these are mass units rather than weight units, and the distinction only bites in physics, where weight is a force measured in newtons.
lbs to stone formula
To go the other way, use pound = stone ÷ 0.07142857.
About these units
The international avoirdupois pound is exactly 0.45359237 kilograms — defined in terms of the metric system, not the other way round.
The stone equals 14 pounds and remains in everyday use for body weight in Britain and Ireland, while being essentially unknown elsewhere.
Pound is also written pounds, lbs and #. Stone is also written stones.
Sources
lbs to stone conversion table
| Pound | Stone |
|---|---|
| 1 lb | 0.07143 st |
| 2 lb | 0.1429 st |
| 3 lb | 0.2143 st |
| 5 lb | 0.3571 st |
| 10 lb | 0.7143 st |
| 20 lb | 1.4286 st |
| 25 lb | 1.7857 st |
| 50 lb | 3.5714 st |
| 100 lb | 7.1429 st |
| 250 lb | 17.8571 st |
| 500 lb | 35.7143 st |
| 1,000 lb | 71.4286 st |
Frequently asked questions
How many stones are in a pound? +
There are 0.071429 stones in one pound.
What is 10 lb in st? +
10 lb equals 0.7143 st. Multiply 10 by 0.07142857.
How do I convert stone back to pound? +
Use pound = stone ÷ 0.07142857. The converter above handles both directions, or see our dedicated stone to lbs page.
How accurate is this pound to stone conversion? +
The factor used is 0.0714285714, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate lb to st in my head? +
Divide by 14. That matches the true factor of 0.071429 exactly, so no adjustment is needed for a mental estimate.