Mass per volume density.
Grams per Cup to Grains per Cup Converter — g/cup to gr/cup
Convert Gram per Cup (g/cup) to Grain per Cup (gr/cup) using the exact conversion factor (1 gram per cup = 15.43235835 grain per cup). See the formula, worked examples, and conversion table.
Grams per Cup 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 4.226752838 / 0.2738889767.
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 Cup
Gram per Cup 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 = grams per cup × 15.4323583529
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 cup equals 0.273888976724 base units, so dividing one by the other gives the direct gram per cup-to-grain per cup factor of 15.4323583529.
Simple example
1 g/cup × 15.43235835 = 15.43235835 gr/cup
1 gram per cup = 15.43235835 grains per cup.
Real-world example
1,000 g/cup × 15.43235835 = 15,432.35835 gr/cup
1,000 grams per cup = 15,432.35835 grains per cup.
Conversion table
| Gram per Cup (g/cup) | Grain per Cup (gr/cup) |
|---|---|
| 0.1 g/cup | 1.543235835 gr/cup |
| 1 g/cup | 15.43235835 gr/cup |
| 10 g/cup | 154.3235835 gr/cup |
| 100 g/cup | 1,543.235835 gr/cup |
| 1,000 g/cup | 15,432.35835 gr/cup |
| 10,000 g/cup | 154,323.5835 gr/cup |
Reverse conversion: Grain per Cup to Gram per Cup
15.43235835 gr/cup × 0.06479891 = 0.9999999998 g/cup
15.43235835 grains per cup = 0.9999999998 grams per cup.
grams per cup = grains per cup × 0.06479891
For a page dedicated to this direction, see Grain per Cup to Gram per Cup.
Understanding the Gram per Cup (g/cup)
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 gram per cup?
1 gram per cup equals 15.43235835 grains per cup, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to grain per cup?
Multiply the gram per cup value by 15.43235835. The converter above does this instantly to whatever precision you set.
How do I convert grain per cup back to gram per cup?
Use the reverse factor: 1 grain per cup equals 0.06479891 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 cup?
Grain per Cup (gr/cup) is a unit of density.
Is the gram per cup to grain per cup conversion exact?
Yes. Both gram per cup and grain per cup are defined by fixed standards rather than physical artifacts, so the factor of 15.43235835 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.