Mass per volume density.
Ounces per Cubic yard to Grains per Cup Converter — oz/yd3 to gr/cup
Convert Ounce per Cubic yard (oz/yd3) to Grain per Cup (gr/cup) using the exact conversion factor (1 ounce per cubic yard = 0.1353825071 grain per cup). See the formula, worked examples, and conversion table.
Ounces per Cubic yard to Grains 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 0.03707977633 / 0.2738889767.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Cubic yard to Grains per Cup
Ounce per Cubic yard and Grain 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
grains per cup = ounces per cubic yard × 0.135382507073
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic yard equals 0.0370797763286 base units, and 1 grain per cup equals 0.273888976724 base units, so dividing one by the other gives the direct ounce per cubic yard-to-grain per cup factor of 0.135382507073.
Simple example
1 oz/yd3 × 0.1353825071 = 0.1353825071 gr/cup
1 ounce per cubic yard = 0.1353825071 grains per cup.
Real-world example
1,000 oz/yd3 × 0.1353825071 = 135.3825071 gr/cup
1,000 ounces per cubic yard = 135.3825071 grains per cup.
Conversion table
| Ounce per Cubic yard (oz/yd3) | Grain per Cup (gr/cup) |
|---|---|
| 0.1 oz/yd3 | 0.0135382507 gr/cup |
| 1 oz/yd3 | 0.1353825071 gr/cup |
| 10 oz/yd3 | 1.353825071 gr/cup |
| 100 oz/yd3 | 13.53825071 gr/cup |
| 1,000 oz/yd3 | 135.3825071 gr/cup |
| 10,000 oz/yd3 | 1,353.825071 gr/cup |
Reverse conversion: Grain per Cup to Ounce per Cubic yard
0.1353825071 gr/cup × 7.386478664 = 1 oz/yd3
0.1353825071 grains per cup = 1 ounces per cubic yard.
ounces per cubic yard = grains per cup × 7.38647866419
For a page dedicated to this direction, see Grain per Cup to Ounce per Cubic yard.
Understanding the Ounce per Cubic yard (oz/yd3)
Mass per volume density.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cup are in 1 ounce per cubic yard?
1 ounce per cubic yard equals 0.1353825071 grains per cup, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic yard to grain per cup?
Multiply the ounce per cubic yard value by 0.1353825071. The converter above does this instantly to whatever precision you set.
How do I convert grain per cup back to ounce per cubic yard?
Use the reverse factor: 1 grain per cup equals 7.386478664 ounces per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic yard?
Ounce per Cubic yard (oz/yd3) is a unit of density.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
Is the ounce per cubic yard to grain per cup conversion exact?
Yes. Both ounce per cubic yard and grain per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.1353825071 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.