Mass per volume density.
Drams per Gallon to Grains per Cubic Millimeter Converter — dr/gal to gr/mm3
Convert Dram per Gallon (dr/gal) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 dram per gallon = 0.0000072235 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Drams per Gallon 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 0.4680719817 / 64798.91.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Gallon to Grains per Cubic Millimeter
Dram per Gallon 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 = drams per gallon × 0.00000722345455667
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per gallon equals 0.468071981707 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct dram per gallon-to-grain per cubic millimeter factor of 0.00000722345455667.
Simple example
1 dr/gal × 0.000007223454557 = 0.0000072235 gr/mm3
1 dram per gallon = 0.0000072235 grains per cubic millimeter.
Real-world example
1,000 dr/gal × 0.000007223454557 = 0.0072234546 gr/mm3
1,000 drams per gallon = 0.0072234546 grains per cubic millimeter.
Conversion table
| Dram per Gallon (dr/gal) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 dr/gal | 7.223455e-7 gr/mm3 |
| 1 dr/gal | 0.0000072235 gr/mm3 |
| 10 dr/gal | 0.0000722345 gr/mm3 |
| 100 dr/gal | 0.0007223455 gr/mm3 |
| 1,000 dr/gal | 0.0072234546 gr/mm3 |
| 10,000 dr/gal | 0.0722345456 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Dram per Gallon
0.0000072235 gr/mm3 × 138437.9167 = 1.000006291 dr/gal
0.0000072235 grains per cubic millimeter = 1.000006291 drams per gallon.
drams per gallon = grains per cubic millimeter × 138437.916672
For a page dedicated to this direction, see Grain per Cubic Millimeter to Dram per Gallon.
Understanding the Dram per Gallon (dr/gal)
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 gallon?
1 dram per gallon equals 0.0000072235 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert dram per gallon to grain per cubic millimeter?
Multiply the dram per gallon value by 0.000007223454557. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to dram per gallon?
Use the reverse factor: 1 grain per cubic millimeter equals 138,437.9167 drams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per gallon?
Dram per Gallon (dr/gal) 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 gallon to grain per cubic millimeter conversion exact?
Yes. Both dram per gallon and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.000007223454557 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.