Ounce to Grain Converter.
The avoirdupois ounce - standard for US food labels, recipes, and postal weights. Converting to grains: The smallest common unit in the avoirdupois system, used in ballistics and medicine. One ounce equals 437.5 gr.
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Conversion formula
Multiply the ounce value by 437.5 to get grains. (factor: 437.5)
1 oz = 437.5 gr
Quick reference table
| oz | gr |
|---|---|
| 1 oz | 437.5 gr |
| 2 oz | 875 gr |
| 5 oz | 2,187.5 gr |
| 10 oz | 4,375 gr |
| 25 oz | 10,937.5 gr |
| 50 oz | 21,875 gr |
| 100 oz | 43,750 gr |
| 250 oz | 109,375 gr |
Need the reverse? Try ourGrain to Ounce.
Ounce to Grain FAQ
How many grains are in one ounce?
One ounce equals 437.5 gr. Multiply by 437.5 to convert any value.
How do you convert oz to gr?
Multiply the ounce value by 437.5 to get grains.
When would you use ounces vs grains?
The avoirdupois ounce - standard for US food labels, recipes, and postal weights. The smallest common unit in the avoirdupois system, used in ballistics and medicine.