Grain (gr)
Exactly 1/7000 of an avoirdupois pound.
What is a grain?
- Symbol
- gr
- Quantity
- Weight & Mass
- Unit system
- US customary
- Definition
- Exactly 1/7000 of an avoirdupois pound.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used for bullet and gunpowder weights and, historically, for medicine doses such as aspirin tablets.
Grain in other weight & mass units
- 1 gr = 64798.91 µgMicrogram
- 1 gr = 64.79891 mgGrain to Milligram converter
- 1 gr = 0.06479891 gGram
- 1 gr = 0.00006479891 kgKilogram
- 1 gr = 6.479891e-8 tTonne (metric ton)
- 1 gr = 0.32399455 ctCarat (metric)
- 1 gr ≈ 0.002285714286 ozOunce
- 1 gr ≈ 0.0001428571429 lbPound
- 1 gr ≈ 7.142857143e-8 short tnShort ton (US ton)
- 1 gr ≈ 6.37755102e-8 long tnLong ton (UK ton)
Grain quick reference
| Grain | Milligram | Kilogram | Pound |
|---|---|---|---|
| 1 gr | = 64.79891 mg | = 0.00006479891 kg | ≈ 0.0001428571429 lb |
| 10 gr | = 647.9891 mg | = 0.0006479891 kg | ≈ 0.001428571429 lb |
| 100 gr | = 6479.891 mg | = 0.006479891 kg | ≈ 0.01428571429 lb |
| 1000 gr | = 64798.91 mg | = 0.06479891 kg | ≈ 0.1428571429 lb |
Where the grain fits
The next smaller weight & mass unit is the milligram (mg). 1 gr = 64.79891 mg, and 1 mg ≈ 0.01543235835 gr.
The next larger weight & mass unit is the carat (ct). 1 gr = 0.32399455 ct, and 1 ct ≈ 3.086471671 gr.
Frequently asked questions
- How many milligrams are in one grain?
- One grain = 64.79891 mg (milligrams).
- How many kilograms are in one grain?
- One grain = 0.00006479891 kg (kilograms).
- How many pounds are in one grain?
- One grain ≈ 0.0001428571429 lb (pounds).