Mass per volume density.
Grams per Cup to Grains per Cubic yard Converter — g/cup to gr/yd3
Convert Gram per Cup (g/cup) to Grain per Cubic yard (gr/yd3) using the exact conversion factor (1 gram per cup = 49,870.96875 grain per cubic yard). See the formula, worked examples, and conversion table.
Grams per Cup to Grains per Cubic yard 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 4.226752838 / 8.47537745e-5.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cup to Grains per Cubic yard
Gram per Cup and Grain per Cubic yard 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 cubic yard = grams per cup × 49870.9687491
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cup equals 4.22675283773 base units, and 1 grain per cubic yard equals 0.0000847537744654 base units, so dividing one by the other gives the direct gram per cup-to-grain per cubic yard factor of 49870.9687491.
Simple example
1 g/cup × 49870.96875 = 49,870.96875 gr/yd3
1 gram per cup = 49,870.96875 grains per cubic yard.
Real-world example
1,000 g/cup × 49870.96875 = 49,870,968.75 gr/yd3
1,000 grams per cup = 49,870,968.75 grains per cubic yard.
Conversion table
| Gram per Cup (g/cup) | Grain per Cubic yard (gr/yd3) |
|---|---|
| 0.1 g/cup | 4,987.096875 gr/yd3 |
| 1 g/cup | 49,870.96875 gr/yd3 |
| 10 g/cup | 498,709.6875 gr/yd3 |
| 100 g/cup | 4,987,096.875 gr/yd3 |
| 1,000 g/cup | 49,870,968.75 gr/yd3 |
| 10,000 g/cup | 498,709,687.5 gr/yd3 |
Reverse conversion: Grain per Cubic yard to Gram per Cup
1 gr/yd3 × 0.00002005174604 = 0.0000200517 g/cup
1 grain per cubic yard = 0.0000200517 grams per cup.
grams per cup = grains per cubic yard × 0.0000200517460375
For a page dedicated to this direction, see Grain per Cubic yard to Gram per Cup.
Understanding the Gram per Cup (g/cup)
Mass per volume density.
Understanding the Grain per Cubic yard (gr/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic yard are in 1 gram per cup?
1 gram per cup equals 49,870.96875 grains per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to grain per cubic yard?
Multiply the gram per cup value by 49870.96875. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic yard back to gram per cup?
Use the reverse factor: 1 grain per cubic yard equals 0.0000200517 grams per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cup?
Gram per Cup (g/cup) is a unit of density.
What is a grain per cubic yard?
Grain per Cubic yard (gr/yd3) is a unit of density.
Is the gram per cup to grain per cubic yard conversion exact?
Yes. Both gram per cup and grain per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 49870.96875 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.