How many grams are in a grain?

1 gr = 0.064799 g. To convert any amount, multiply by 0.064799.

How do you convert grains to grams?

Multiply the number of grains by 0.064799 to get grams. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Gold weight

Grains to grams converter

Convert grains (gr) to grams (g). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert grains to grams— the formula

Grains convert to grams by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

g = gr × 0.064799

gr = g × 15.4324

Troy weight system, ISO 31-3: 1 troy oz = 31.1034768 g; 1 dwt (pennyweight) = 1/20 troy oz = 1.55517384 g; 1 grain = 1/24 dwt = 0.06479891 g (NIST SP 811).

Questions

Frequently asked questions

How many grams are in a grain?
1 gr = 0.064799 g. To convert any amount, multiply by 0.064799.
How do you convert grains to grams?
Multiply the number of grains by 0.064799 to get grams. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.