Ounces to grains
1 ounce in grains
1 oz = 437.5 gr
gr = oz × 437.5
To convert ounces to grains, multiply by 437.5. The table below gives the values people look up most often, and the converter works for any number.
Ounces to grains table
| Ounces | Grains |
|---|---|
| 1 oz | 437.5 |
| 2 oz | 875 |
| 3 oz | 1,312.5 |
| 4 oz | 1,750 |
| 5 oz | 2,187.5 |
| 10 oz | 4,375 |
| 15 oz | 6,562.5 |
| 20 oz | 8,750 |
| 25 oz | 10,937.5 |
| 30 oz | 13,125 |
| 40 oz | 17,500 |
| 50 oz | 21,875 |
| 75 oz | 32,812.5 |
| 100 oz | 43,750 |
| 250 oz | 109,375 |
| 500 oz | 218,750 |
| 1,000 oz | 437,500 |
How the conversion works
The relationship is gr = oz × 437.5. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.
Common questions
- How many grains are in one ounce?
- One ounce equals 437.5 grains. gr = oz × 437.5.
- How do you convert ounces to grains?
- Use gr = oz × 437.5. So 10 oz is 4,375 gr.
- How many ounces are in one grain?
- One grain equals 0.0022857 ounces, which is the reverse of the conversion above.
Related pages
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place