Grain Weight Converter
Convert grains into any other weight unit. The grain is the oldest unit in the English system and is still used for bullets, arrow points and some medicine doses.
Convert grains
Frequently Asked Questions
64.79891 milligrams, exactly. It is defined as one seven-thousandth of a pound.
437.5 in an avoirdupois ounce, and 480 in a troy ounce.
Convention, and precision: the unit is small enough to describe useful differences in projectile weight without decimals.
Yes. It is the one unit shared by both systems, which is how they are related to each other.