Grain

gr

Historical unit, 1/7000 of a pound

About Grain (gr)

At 64.79891 milligrams, the grain is the smallest traditional unit of weight and is shared across the avoirdupois, troy, and apothecaries' systems. Ammunition manufacturers specify bullet weights in grains (a typical 9mm round uses a 115-grain bullet), and pharmacists historically measured drug doses in grains.

Category
Weight & Mass
Symbol
gr
Also known as
grains
01

CONVERT TO

Kilogram kg Gram g Milligram mg Microgram µg Metric Ton t Pound lb Ounce oz Stone st Short Ton ton Long Ton long tn Carat ct Troy Ounce oz t Slug slug

Frequently Asked Questions

What is a Grain (gr)?

Historical unit, 1/7000 of a pound

How many Kilogram (kg) are in one Grain (gr)?

One Grain (gr) equals 0.0000647989 Kilogram (kg).

How many Gram (g) are in one Grain (gr)?

One Grain (gr) equals 0.064799 Gram (g).

How many Milligram (mg) are in one Grain (gr)?

One Grain (gr) equals 64.7989 Milligram (mg).

How do I convert Grain to Kilogram?

To convert Grain to Kilogram, multiply the value by 0.0000647989 (1 gr = 0.0000647989 kg).