Convert Grains (gr) to Ounces (oz)
1 grain equals 0.00228571 ounces.
Grain to Ounce Converter
How to Convert Grain to Ounce
1 grain = 0.00228571 ounces
Ounce = Grain × 0.00228571
Example: 1 gr × 0.00228571 = 0.00228571 oz
Reverse Conversion
To convert ounces back to grains:
- Remember, 1 ounce equals 437.5 grains.
- To convert 0.00228571 oz to gr, multiply
0.00228571 x 437.5, resulting in1 gr.
Common Grain to Ounce Conversions
| Grain | Ounce | Actions |
|---|---|---|
| 50 grains | 0.114286 ounces | |
| 100 grains | 0.228571 ounces | |
| 500 grains | 1.14286 ounces | |
| 1000 grains | 2.28571 ounces |
Grains to ounces Conversion Table
Reference table with common grains to ounces conversions. All values calculated with high precision.
Grains to Ounces Table
1000 to 1 × 108
Ounces to Grains Table
1 to 100000
Definition of Grain
- Definition
- The grain (gr) is one of the oldest units of mass, historically based on the weight of a single grain of cereal. It is still used in ballistics and jewelry.
The grain provides very fine mass resolution compared to larger imperial units. - Exact factor
- 1 gr = 64.79891 mg
- Examples
- • 7000 gr = 1 lb
• 500 gr ≈ 32.4 g
Definition of Ounce
- Definition
- The ounce (oz) is a unit of mass equal to one sixteenth of a pound in the avoirdupois system. It is commonly used for food portions, postal items, and small packages.
The ounce remains prevalent in countries using imperial or US customary units. - Exact factor
- 1 oz = 28.349523125 g = 0.0625 lb
- Examples
- • 16 oz = 1 lb
• 8 oz ≈ 226.8 g
About the Ounce
Facts & Uses
- Avoirdupois ounce equals 1/16 of a pound = exactly 28.349523125 grams (derived from the 1959 Agreement on the pound).
- Standard unit for food portions (deli meats, cheese), postal letter weights (US 1st-class mail), and beverage servings (a 12 oz soda can).
- Common in cooking for both dry and fluid ingredients in the US — though the fluid ounce (volume) and ounce (mass) are unrelated and frequently confused.
- Used in boxing glove weights (8 oz / 10 oz / 12 oz), archery (arrow weight), and jewelry for non-precious metal items.
Curiosities
- The troy ounce (used for gold, silver, platinum) is heavier: 1 troy oz ≈ 31.1035 g, vs. 28.35 g for avoirdupois — a ~10% difference that matters at bullion prices.
- The symbol "oz" derives from the medieval Italian onza, in turn from the Latin uncia meaning "a twelfth part" (originally 1/12 of a Roman pound).
- 16 oz (1 lb) of feathers and 16 oz (1 lb) of gold weigh the same in avoirdupois — but the gold would actually weigh more if measured in troy ounces, since 1 lb troy = 12 troy oz only.
- 1 oz ≈ 28.35 g ≈ 437.5 grains.
Sources
Frequently Asked Questions
How many ounces are in one grain?
One grain equals 0.00228571 ounces. To convert, multiply the grain value by 0.00228571. For the reverse, divide the ounce value by 0.00228571 (or multiply by 437.5).
What is 0.26 grains in ounces?
0.26 grains = 0.00059429 ounces. This is one of the most commonly searched conversions for this pair.
How precise is the grain-to-ounce conversion?
The factor 0.00228571 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Ounce to Grain
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