UnitSnapPounds to Stone
1 lb = 0.07142857 st
Pounds to stone is used when a weight in pounds, from an American scale, fitness app, or medical chart, needs to be put into the stone-and-pounds format familiar in the UK and Ireland. It also helps British readers follow US diet and fitness content. Fourteen pounds make one stone.
When you need to convert pounds to stone
- Turning a US bathroom scale reading into stone and pounds
- Following American weight-loss content while tracking goals in stone
- Expressing a newborn or pet weight in stone for UK relatives
- Converting a boxing or wrestling weight class listed in pounds
How to convert pounds to stone
st = lb × 0.07142857
Equivalently: st = lb ÷ 14.
Example: 5 lb = 0.3571429 st
Common body weights in pounds
| Pounds (lb) | Stone (st) |
|---|---|
| 100 lb | 7.142857 st |
| 120 lb | 8.571429 st |
| 140 lb | 10 st |
| 150 lb | 10.71429 st |
| 160 lb | 11.42857 st |
| 180 lb | 12.85714 st |
| 200 lb | 14.28571 st |
| 220 lb | 15.71429 st |
| 250 lb | 17.85714 st |
Tips for converting pounds to stone
- Divide by 14. The whole number is the stone and the remainder is the leftover pounds.
- A decimal result such as 11.5 st means 11 st 7 lb, not 11 st 5 lb. Multiply the decimal part by 14.
- Small weights under 14 lb are usually just stated in pounds in the UK rather than as a fraction of a stone.
Pounds to Stone conversion table
| Pounds (lb) | Stone (st) |
|---|---|
| 1 lb | 0.07142857 st |
| 2 lb | 0.1428571 st |
| 3 lb | 0.2142857 st |
| 4 lb | 0.2857143 st |
| 5 lb | 0.3571429 st |
| 6 lb | 0.4285714 st |
| 7 lb | 0.5 st |
| 8 lb | 0.5714286 st |
| 9 lb | 0.6428571 st |
| 10 lb | 0.7142857 st |
| 15 lb | 1.071429 st |
| 20 lb | 1.428571 st |
| 25 lb | 1.785714 st |
| 30 lb | 2.142857 st |
| 40 lb | 2.857143 st |
| 50 lb | 3.571429 st |
| 75 lb | 5.357143 st |
| 100 lb | 7.142857 st |
| 250 lb | 17.85714 st |
| 500 lb | 35.71429 st |
| 1,000 lb | 71.42857 st |
About the units
Pounds: The pound (avoirdupois) is a US customary and imperial unit of mass defined as exactly 0.45359237 kilograms.
Stone: The stone is a British unit of mass equal to 14 pounds, or about 6.35 kilograms, still used for body weight in the UK and Ireland.
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Frequently asked questions
How many stone are in 1 pound?
1 pound equals 0.07142857 stone.
How many pounds are in 1 stone?
1 stone equals 14 pounds.
How do I convert pounds to stone?
Use the formula st = lb × 0.07142857. Equivalently, st = lb ÷ 14.
What is 10 pounds in stone?
10 pounds equals 0.7142857 stone.
Related conversions
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated