Mass per volume density.
Grains per Cubic Millimeter to Grams per Cubic Centimeter Converter — gr/mm3 to g/cm3
Convert Grain per Cubic Millimeter (gr/mm3) to Gram per Cubic Centimeter (g/cm3) using the exact conversion factor (1 grain per cubic millimeter = 64.79891 gram per cubic centimeter). See the formula, worked examples, conversion table, and common uses.
Grains per Cubic Millimeter 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 64798.91 / 1000.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic Millimeter to Grams per Cubic Centimeter
Grain per Cubic Millimeter 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 cubic millimeter × 64.79891
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic millimeter equals 64798.91 base units, and 1 gram per cubic centimeter equals 1000 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-gram per cubic centimeter factor of 64.79891.
Simple example
1 gr/mm3 × 64.79891 = 64.79891 g/cm3
1 grain per cubic millimeter = 64.79891 grams per cubic centimeter.
Real-world example
1,000 gr/mm3 × 64.79891 = 64,798.91 g/cm3
1,000 grains per cubic millimeter = 64,798.91 grams per cubic centimeter.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Gram per Cubic Centimeter (g/cm3) |
|---|---|
| 0.1 gr/mm3 | 6.479891 g/cm3 |
| 1 gr/mm3 | 64.79891 g/cm3 |
| 10 gr/mm3 | 647.9891 g/cm3 |
| 100 gr/mm3 | 6,479.891 g/cm3 |
| 1,000 gr/mm3 | 64,798.91 g/cm3 |
| 10,000 gr/mm3 | 647,989.1 g/cm3 |
Reverse conversion: Gram per Cubic Centimeter to Grain per Cubic Millimeter
64.79891 g/cm3 × 0.01543235835 = 1 gr/mm3
64.79891 grams per cubic centimeter = 1 grains per cubic millimeter.
grains per cubic millimeter = grams per cubic centimeter × 0.0154323583529
For a page dedicated to this direction, see Gram per Cubic Centimeter to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
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 cubic millimeter?
1 grain per cubic millimeter equals 64.79891 grams per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to gram per cubic centimeter?
Multiply the grain per cubic millimeter value by 64.79891. The converter above does this instantly to whatever precision you set.
How do I convert gram per cubic centimeter back to grain per cubic millimeter?
Use the reverse factor: 1 gram per cubic centimeter equals 0.0154323584 grains per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) 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 cubic millimeter to gram per cubic centimeter conversion exact?
Yes. Both grain per cubic millimeter and gram per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 64.79891 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.