Mass per volume density.
Grains per Cup to Ounces per Cup Converter — gr/cup to oz/cup
Convert Grain per Cup (gr/cup) to Ounce per Cup (oz/cup) using the exact conversion factor (1 grain per cup = 0.0022857143 ounce per cup). See the formula, worked examples, and conversion table.
Grains per Cup to Ounces per Cup converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 0.2738889767 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cup to Ounces per Cup
Grain per Cup and Ounce per Cup both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
ounces per cup = grains per cup × 0.00228571428571
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cup equals 0.273888976724 base units, and 1 ounce per cup equals 119.826427317 base units, so dividing one by the other gives the direct grain per cup-to-ounce per cup factor of 0.00228571428571.
Simple example
1 gr/cup × 0.002285714286 = 0.0022857143 oz/cup
1 grain per cup = 0.0022857143 ounces per cup.
Real-world example
1,000 gr/cup × 0.002285714286 = 2.285714286 oz/cup
1,000 grains per cup = 2.285714286 ounces per cup.
Conversion table
| Grain per Cup (gr/cup) | Ounce per Cup (oz/cup) |
|---|---|
| 0.1 gr/cup | 0.0002285714 oz/cup |
| 1 gr/cup | 0.0022857143 oz/cup |
| 10 gr/cup | 0.0228571429 oz/cup |
| 100 gr/cup | 0.2285714286 oz/cup |
| 1,000 gr/cup | 2.285714286 oz/cup |
| 10,000 gr/cup | 22.85714286 oz/cup |
Reverse conversion: Ounce per Cup to Grain per Cup
0.0022857143 oz/cup × 437.5 = 1.000000006 gr/cup
0.0022857143 ounces per cup = 1.000000006 grains per cup.
grains per cup = ounces per cup × 437.5
For a page dedicated to this direction, see Ounce per Cup to Grain per Cup.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Understanding the Ounce per Cup (oz/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ounces per cup are in 1 grain per cup?
1 grain per cup equals 0.0022857143 ounces per cup, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cup to ounce per cup?
Multiply the grain per cup value by 0.002285714286. The converter above does this instantly to whatever precision you set.
How do I convert ounce per cup back to grain per cup?
Use the reverse factor: 1 ounce per cup equals 437.5 grains per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
What is a ounce per cup?
Ounce per Cup (oz/cup) is a unit of density.
Is the grain per cup to ounce per cup conversion exact?
Yes. Both grain per cup and ounce per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.002285714286 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.