How to convert pounds to stone
One pound equals 0.071429 stone, so multiply the number of pounds by 0.071429:
st = lb × 0.071429
lb = st ÷ 0.071429 (1 st = 14 lb)
Example: 112 lb → 112 × 0.071429 = 8 st.
Going the other way, divide by 0.071429, or multiply by 14; the stone to pounds converter does it for you.
Everyday values
| Pounds | Stone | For example |
|---|---|---|
| 112 lb | 8 st | 8 stone |
| 140 lb | 10 st | 10 stone |
| 154 lb | 11 st | 11 stone |
| 168 lb | 12 st | 12 stone |
| 196 lb | 14 st | 14 stone |
When you need this conversion
Divide pounds by 14 to get stone. In the UK, body weight is usually given as stone and pounds: 160 lb is 11 stone 6 lb (11.43 stone).
Pound to stone conversion table
| lb | st | lb | st |
|---|---|---|---|
| 100 lb | 7.1429 st | 160 lb | 11.4286 st |
| 105 lb | 7.5 st | 165 lb | 11.7857 st |
| 110 lb | 7.8571 st | 170 lb | 12.1429 st |
| 115 lb | 8.2143 st | 175 lb | 12.5 st |
| 120 lb | 8.5714 st | 180 lb | 12.8571 st |
| 125 lb | 8.9286 st | 185 lb | 13.2143 st |
| 130 lb | 9.2857 st | 190 lb | 13.5714 st |
| 135 lb | 9.6429 st | 195 lb | 13.9286 st |
| 140 lb | 10 st | 200 lb | 14.2857 st |
| 145 lb | 10.3571 st | 205 lb | 14.6429 st |
| 150 lb | 10.7143 st | 210 lb | 15 st |
| 155 lb | 11.0714 st | 215 lb | 15.3571 st |
About the units
- Pound (lb): exactly 0.45359237 kilograms (international avoirdupois pound).
- Stone (st): 14 pounds, exactly 6.35029318 kilograms.
Both are units of weight (mass). The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many stone are in one pound?
One pound is 0.071429 stone. One stone is 14 pounds.
How do I convert pounds to stone?
Multiply the value in pounds by 0.071429. To go back, divide by 0.071429.
What is 112 lb in stone?
112 lb = 8 st.
What is 140 lb in stone?
140 lb = 10 st.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.