21 lb to st
21 pounds in stone
21 lb = 1.5 st
st = lb × 1/14
21 pounds is 1.5 stone. To get there, multiply by 0.07142857143.
Values either side
| Pounds | Stone |
|---|---|
| 17 lb | 1.214286 |
| 18 lb | 1.285714 |
| 19 lb | 1.357143 |
| 20 lb | 1.428571 |
| 21 lb ← | 1.5 |
| 22 lb | 1.571429 |
| 23 lb | 1.642857 |
| 24 lb | 1.714286 |
| 25 lb | 1.785714 |
How the conversion works
The relationship is st = lb × 1/14. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.
Common questions
- What is 21 lb in stone?
- 21 lb is 1.5 st.
- How do you convert pounds to stone?
- Multiply by 0.07142857143.
Related pages
- Pounds to stone Full table and converter
- 21 st to lb The other direction
- 17 lb to st 1.214286 st
- 18 lb to st 1.285714 st
- 19 lb to st 1.357143 st
- 20 lb to st 1.428571 st
- 22 lb to st 1.571429 st
- 23 lb to st 1.642857 st
- 24 lb to st 1.714286 st
- 25 lb to st 1.785714 st
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place