Convert Grams to Grains
1 gram (g) equals 15.43235835 grains (gr).
1 g = 15.43235835 gr
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gram to grain converter to paste a column from Excel.
How to Convert Gram to Grain
- 1 g = 15.43235835 gr
- 1 gr = 0.06479891 g
- Example: convert 15 g to gr: 15 g = 15 × 15.43235835 gr = 231.4853753 gr
Reference conditions. gr: Avoirdupois system: 1 lb = 16 oz = 7000 grains = 0.45359237 kg exactly (1959 agreement).
Formula
gr = g × 15.43235835294
Derivation from SI units:
- 1 g = 10⁻³ kg
- 1 gr = 1/7000 lb = 64.79891 mg (exact)
- 1 g = 0.001 kg ÷ 0.00006479891 kg per gr = 15.43235835294 gr
Both units are defined exactly, so the factor is exact. Gram definition: gram; Grain definition: grain.
Worked examples
- A reading of 25 g converts to 385.8089588 gr.
25 g × 15.43235835 = 385.8089588 gr - A value of 150 g is 2314.853753 gr.
150 g × 15.43235835 = 2314.853753 gr
Gram to Grain conversion table
| Grams (g) | Grains (gr) |
|---|---|
| 0.1 g | 1.543235835 gr |
| 0.5 g | 7.716179176 gr |
| 1 g | 15.43235835 gr |
| 2 g | 30.86471671 gr |
| 5 g | 77.16179176 gr |
| 10 g | 154.3235835 gr |
| 14 g | 216.0530169 gr |
| 20 g | 308.6471671 gr |
| 25 g | 385.8089588 gr |
| 28.35 g | 437.5073593 gr |
| 30 g | 462.9707506 gr |
| 50 g | 771.6179176 gr |
| 75 g | 1157.426876 gr |
| 100 g | 1543.235835 gr |
| 113 g | 1743.856494 gr |
| 125 g | 1929.044794 gr |
| 150 g | 2314.853753 gr |
| 200 g | 3086.471671 gr |
| 250 g | 3858.089588 gr |
| 300 g | 4629.707506 gr |
| 454 g | 7006.290692 gr |
| 500 g | 7716.179176 gr |
| 750 g | 11574.26876 gr |
| 1000 g | 15432.35835 gr |
Where it's used
Grams are used for recipes and nutrition labels, while grains appear in bullet and powder weights. Both measure mass (commonly called weight), so the conversion is a fixed factor.
Gram to other weight and mass units
| Conversion | 1 g equals |
|---|---|
| gram to kilogram | 0.001 kg |
| gram to milligram | 1000 mg |
| gram to microgram | 1000000 µg |
| gram to metric ton | 0.000001 t |
| gram to pound | 0.002204622622 lb |
| gram to ounce | 0.03527396195 oz |
| gram to stone | 0.0001574730444 st |
| gram to short ton | 0.000001102311311 ton (US) |
| gram to long ton | 9.842065276 × 10⁻⁷ ton (UK) |
| gram to grain | 15.43235835 gr |
| gram to troy ounce | 0.03215074657 oz t |
| gram to carat | 5 ct |
Frequently asked questions
How many grains are in 1 gram?
1 g = 15.43235835 gr.
How do I convert grams to grains?
Multiply the value in g by 15.43235835. For example, 15 g × 15.43235835 = 231.4853753 gr.
Is the g to gr conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- 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 Grams to Grains. Retrieved October 17, 2026, from https://scientificconverters.com/mass/grams-to-grains/
IEEE
Scientific Converters, "Convert Grams to Grains," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/mass/grams-to-grains/