Mass per volume density.
Grains per Cup to Grams per Cubic Centimeter Converter — gr/cup to g/cm3
Convert Grain per Cup (gr/cup) to Gram per Cubic Centimeter (g/cm3) using the exact conversion factor (1 grain per cup = 0.000273889 gram per cubic centimeter). See the formula, worked examples, conversion table, and common uses.
Grains per Cup to Grams per Cubic Centimeter 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 / 1000.
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 Grams per Cubic Centimeter
Grain per Cup and Gram per Cubic Centimeter 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
grams per cubic centimeter = grains per cup × 0.000273888976724
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 gram per cubic centimeter equals 1000 base units, so dividing one by the other gives the direct grain per cup-to-gram per cubic centimeter factor of 0.000273888976724.
Simple example
1 gr/cup × 0.0002738889767 = 0.000273889 g/cm3
1 grain per cup = 0.000273889 grams per cubic centimeter.
Real-world example
1,000 gr/cup × 0.0002738889767 = 0.2738889767 g/cm3
1,000 grains per cup = 0.2738889767 grams per cubic centimeter.
Conversion table
| Grain per Cup (gr/cup) | Gram per Cubic Centimeter (g/cm3) |
|---|---|
| 0.1 gr/cup | 0.0000273889 g/cm3 |
| 1 gr/cup | 0.000273889 g/cm3 |
| 10 gr/cup | 0.0027388898 g/cm3 |
| 100 gr/cup | 0.0273888977 g/cm3 |
| 1,000 gr/cup | 0.2738889767 g/cm3 |
| 10,000 gr/cup | 2.738889767 g/cm3 |
Reverse conversion: Gram per Cubic Centimeter to Grain per Cup
0.000273889 g/cm3 × 3651.114448 = 1.000000085 gr/cup
0.000273889 grams per cubic centimeter = 1.000000085 grains per cup.
grains per cup = grams per cubic centimeter × 3651.11444776
For a page dedicated to this direction, see Gram per Cubic Centimeter to Grain per Cup.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Understanding the Gram per Cubic Centimeter
Gram per Cubic Centimeter (g/cm3) measures density. Numerically identical to kilograms per liter, since one cubic centimeter equals one milliliter — this is the form most commonly used in chemistry and materials-science textbooks. It is classified as a metric derived density unit.
Where it's used: Standard density unit in chemistry and materials science worldwide
Uses of the Gram per Cubic Centimeter today
- Material identification in chemistry and geology (mineral density tables)
- Materials science and engineering specifications
- Laboratory density measurements
Gram per Cubic Centimeter — sources
- BIPM SI Brochure — Gram and cubic centimeter as accepted units for expressing density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per cubic centimeter are in 1 grain per cup?
1 grain per cup equals 0.000273889 grams per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cup to gram per cubic centimeter?
Multiply the grain per cup value by 0.0002738889767. The converter above does this instantly to whatever precision you set.
How do I convert gram per cubic centimeter back to grain per cup?
Use the reverse factor: 1 gram per cubic centimeter equals 3,651.114448 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 gram per cubic centimeter?
Gram per Cubic Centimeter (g/cm3) measures density. Numerically identical to kilograms per liter, since one cubic centimeter equals one milliliter — this is the form most commonly used in chemistry and materials-science textbooks. It is classified as a metric derived density unit.
Is the grain per cup to gram per cubic centimeter conversion exact?
Yes. Both grain per cup and gram per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.0002738889767 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.