Mass per volume density.
Dram per Cubic inches to Grains per Cubic Millimeter Converter — dr/in3 to gr/mm3
Convert Dram per Cubic inch (dr/in3) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 dram per cubic inch = 0.001668618 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Dram 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 108.1246278 / 64798.91.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Dram per Cubic inches to Grains per Cubic Millimeter
Dram 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 = dram per cubic inches × 0.00166861800259
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per cubic inch equals 108.124627774 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct dram per cubic inch-to-grain per cubic millimeter factor of 0.00166861800259.
Simple example
1 dr/in3 × 0.001668618003 = 0.001668618 gr/mm3
1 dram per cubic inch = 0.001668618 grains per cubic millimeter.
Real-world example
1,000 dr/in3 × 0.001668618003 = 1.668618003 gr/mm3
1,000 dram per cubic inches = 1.668618003 grains per cubic millimeter.
Conversion table
| Dram per Cubic inch (dr/in3) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 dr/in3 | 0.0001668618 gr/mm3 |
| 1 dr/in3 | 0.001668618 gr/mm3 |
| 10 dr/in3 | 0.01668618 gr/mm3 |
| 100 dr/in3 | 0.1668618003 gr/mm3 |
| 1,000 dr/in3 | 1.668618003 gr/mm3 |
| 10,000 dr/in3 | 16.68618003 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Dram per Cubic inch
0.001668618 gr/mm3 × 599.2983406 = 0.9999999984 dr/in3
0.001668618 grains per cubic millimeter = 0.9999999984 dram per cubic inches.
dram per cubic inches = grains per cubic millimeter × 599.298340571
For a page dedicated to this direction, see Grain per Cubic Millimeter to Dram per Cubic inch.
Understanding the Dram per Cubic inch (dr/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 dram per cubic inch?
1 dram per cubic inch equals 0.001668618 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cubic inch to grain per cubic millimeter?
Multiply the dram per cubic inch value by 0.001668618003. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to dram per cubic inch?
Use the reverse factor: 1 grain per cubic millimeter equals 599.2983406 dram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per cubic inch?
Dram per Cubic inch (dr/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 dram per cubic inch to grain per cubic millimeter conversion exact?
Yes. Both dram per cubic inch and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.001668618003 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.