Archery term
Grams
What does Grams mean?
A gram (g) is a metric unit of mass. Archery components and arrow weights are often listed in grains instead: one gram equals about 15.432 grains, and one grain equals exactly 0.06479891 grams. Convert units before comparing specs, then check total finished-arrow mass against the bow maker’s minimum.
Primary source for this term: NIST Handbook 44, Appendix C: Units of Mass (2026)
Why it matters
Use one unit consistently when adding arrow components. A grain scale set to grains and a product listing in grams need a conversion before you compare them. For instance, 100 grains is about 6.48 grams, while 100 grams is about 1,543 grains.
What to check
- Convert first: 1 gram is about 15.432 grains, and 1 grain is about 0.0648 grams.
- Check whether a product lists shaft-only or finished-arrow mass.
- Follow the bow or crossbow maker’s minimum finished-arrow mass.