Mass per volume density.
Gram per Cubic inches to Grains per Cubic Millimeter Converter — g/in3 to gr/mm3
Convert Gram per Cubic inch (g/in3) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 gram per cubic inch = 0.0009417403 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Gram per Cubic inches to Grains per Cubic Millimeter 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 61.02374409 / 64798.91.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gram per Cubic inches to Grains per Cubic Millimeter
Gram per Cubic inch and Grain per Cubic Millimeter 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 millimeter = gram per cubic inches × 0.000941740286908
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic inch equals 61.0237440947 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct gram per cubic inch-to-grain per cubic millimeter factor of 0.000941740286908.
Simple example
1 g/in3 × 0.0009417402869 = 0.0009417403 gr/mm3
1 gram per cubic inch = 0.0009417403 grains per cubic millimeter.
Real-world example
1,000 g/in3 × 0.0009417402869 = 0.9417402869 gr/mm3
1,000 gram per cubic inches = 0.9417402869 grains per cubic millimeter.
Conversion table
| Gram per Cubic inch (g/in3) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 g/in3 | 0.000094174 gr/mm3 |
| 1 g/in3 | 0.0009417403 gr/mm3 |
| 10 g/in3 | 0.0094174029 gr/mm3 |
| 100 g/in3 | 0.0941740287 gr/mm3 |
| 1,000 g/in3 | 0.9417402869 gr/mm3 |
| 10,000 g/in3 | 9.417402869 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Gram per Cubic inch
0.0009417403 gr/mm3 × 1061.863885 = 1.000000014 g/in3
0.0009417403 grains per cubic millimeter = 1.000000014 gram per cubic inches.
gram per cubic inches = grains per cubic millimeter × 1061.8638853
For a page dedicated to this direction, see Grain per Cubic Millimeter to Gram per Cubic inch.
Understanding the Gram per Cubic inch (g/in3)
Mass per volume density.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic millimeter are in 1 gram per cubic inch?
1 gram per cubic inch equals 0.0009417403 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic inch to grain per cubic millimeter?
Multiply the gram per cubic inch value by 0.0009417402869. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to gram per cubic inch?
Use the reverse factor: 1 grain per cubic millimeter equals 1,061.863885 gram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cubic inch?
Gram per Cubic inch (g/in3) is a unit of density.
What is a grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) is a unit of density.
Is the gram per cubic inch to grain per cubic millimeter conversion exact?
Yes. Both gram per cubic inch and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.0009417402869 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.