Convert Stone to Grains
1 stone (st) equals 98000 grains (gr).
1 st = 98000 gr
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk stone to grain converter to paste a column from Excel.
How to Convert Stone to Grain
- 1 st = 98000 gr
- 1 gr = 0.00001020408163 st
- Example: convert 15 st to gr: 15 st = 15 × 98000 gr = 1470000 gr
Reference conditions. st: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement). gr: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
gr = st × 98000
Derivation from SI units:
- 1 st = 14 lb = 6.35029318 kg (exact)
- 1 gr = 1/7000 lb = 64.79891 mg (exact)
- 1 st = 6.35029318 kg ÷ 0.00006479891 kg per gr = 98000 gr
Both units are defined exactly, so the factor is exact. Stone definition: stone; Grain definition: grain.
Worked examples
- A reading of 10 st converts to 980000 gr.
10 st × 98000 = 980000 gr - A value of 14 st is 1372000 gr.
14 st × 98000 = 1372000 gr
Stone to Grain conversion table
| Stone (st) | Grains (gr) |
|---|---|
| 1 st | 98000 gr |
| 5 st | 490000 gr |
| 7 st | 686000 gr |
| 8 st | 784000 gr |
| 9 st | 882000 gr |
| 10 st | 980000 gr |
| 10.5 st | 1029000 gr |
| 11 st | 1078000 gr |
| 12 st | 1176000 gr |
| 13 st | 1274000 gr |
| 14 st | 1372000 gr |
| 15 st | 1470000 gr |
| 16 st | 1568000 gr |
| 18 st | 1764000 gr |
| 20 st | 1960000 gr |
Where it's used
Stone are used for body weight in the UK and Ireland (e.g. 11 st 6 lb), while grains appear in bullet and powder weights. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Stone to other weight and mass units
| Conversion | 1 st equals |
|---|---|
| stone to kilogram | 6.35029318 kg |
| stone to gram | 6350.29318 g |
| stone to milligram | 6350293.18 mg |
| stone to microgram | 6350293180 µg |
| stone to metric ton | 0.00635029318 t |
| stone to pound | 14 lb |
| stone to ounce | 224 oz |
| stone to short ton | 0.007 ton (US) |
| stone to long ton | 0.00625 ton (UK) |
| stone to grain | 98000 gr |
| stone to troy ounce | 204.1666667 oz t |
| stone to carat | 31751.4659 ct |
Frequently asked questions
How many grains are in 1 stone?
1 st = 98000 gr.
How do I convert stone to grains?
Multiply the value in st by 98000. For example, 15 st × 98000 = 1470000 gr.
Is the st to gr conversion exact?
Yes. Both units are defined exactly, and 1 st is exactly 98000 gr.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, pound (avoirdupois).
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "grain (gr)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Stone to Grains. Retrieved October 17, 2026, from https://scientificconverters.com/mass/stone-to-grains/
IEEE
Scientific Converters, "Convert Stone to Grains," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/stone-to-grains/