Grains to Grams (gr to g) Converter

How to convert grains to grams

Formulag = gr × 0.06479891

Multiply the value in grains by 0.06479891. To go the other way, multiply by 15.43235835 (or divide by 0.06479891).

A grain is smaller than a gram: it takes 15.43235835 grains to make one gram.

Worked examples

1 grain1 gr × 0.06479891 = 0.06479891 g
5 grains5 gr × 0.06479891 = 0.32399455 g
10 grains10 gr × 0.06479891 = 0.6479891 g
20 grains20 gr × 0.06479891 = 1.2959782 g
100 grains100 gr × 0.06479891 = 6.479891 g

Grains to grams conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Grains to grams: 0.1–10 gr
Grains (gr)	Grams (g)
0.1 gr	0.006479891 g
0.25 gr	0.016199728 g
0.5 gr	0.032399455 g
1 gr	0.06479891 g
2 gr	0.12959782 g
3 gr	0.19439673 g
4 gr	0.25919564 g
5 gr	0.32399455 g
6 gr	0.38879346 g
7 gr	0.45359237 g
8 gr	0.51839128 g
9 gr	0.58319019 g
10 gr	0.6479891 g

Grains to grams: 12–1,000 gr
Grains (gr)	Grams (g)
12 gr	0.77758692 g
15 gr	0.97198365 g
20 gr	1.2959782 g
25 gr	1.6199728 g
30 gr	1.9439673 g
40 gr	2.5919564 g
50 gr	3.2399455 g
75 gr	4.8599182 g
100 gr	6.479891 g
250 gr	16.199728 g
500 gr	32.399455 g
1,000 gr	64.79891 g

About the units

Grain (gr)

Exactly 64.79891 mg; 7,000 grains make a pound. Used for bullets, arrows and some medicines. One grain equals 0.00006479891 kilograms (kg).

Gram (g)

One thousandth of a kilogram. Recipes, nutrition labels and postal scales use grams; a US nickel weighs 5 g. One gram equals 0.001 kilograms (kg).

Frequently asked questions

How many grams are in one grain?

There are 0.06479891 grams in one grain, and this value is exact by definition.

How do I convert grains to grams?

Multiply the number of grains by 0.06479891. For example, 10 gr × 0.06479891 = 0.6479891 g.

How many grains are in one gram?

One gram equals 15.43235835 grains. That is the reverse factor, 1 ÷ 0.06479891.

What is 10 grains in grams?

10 gr = 0.6479891 g.

Is this gr to g converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Grains to Grams Converter