Mass per volume density.
Grains per Cubic Millimeter to Slugs per Gallon Converter — gr/mm3 to slug/gal
Convert Grain per Cubic Millimeter (gr/mm3) to Slug per Gallon (slug/gal) using the exact conversion factor (1 grain per cubic millimeter = 16.80774215 slug per gallon). See the formula, worked examples, and conversion table.
Grains per Cubic Millimeter to Slugs per Gallon 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 / 3855.301291.
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 Slugs per Gallon
Grain per Cubic Millimeter and Slug per Gallon 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
slugs per gallon = grains per cubic millimeter × 16.8077421482
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 slug per gallon equals 3855.30129084 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-slug per gallon factor of 16.8077421482.
Simple example
1 gr/mm3 × 16.80774215 = 16.80774215 slug/gal
1 grain per cubic millimeter = 16.80774215 slugs per gallon.
Real-world example
1,000 gr/mm3 × 16.80774215 = 16,807.74215 slug/gal
1,000 grains per cubic millimeter = 16,807.74215 slugs per gallon.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Slug per Gallon (slug/gal) |
|---|---|
| 0.1 gr/mm3 | 1.680774215 slug/gal |
| 1 gr/mm3 | 16.80774215 slug/gal |
| 10 gr/mm3 | 168.0774215 slug/gal |
| 100 gr/mm3 | 1,680.774215 slug/gal |
| 1,000 gr/mm3 | 16,807.74215 slug/gal |
| 10,000 gr/mm3 | 168,077.4215 slug/gal |
Reverse conversion: Slug per Gallon to Grain per Cubic Millimeter
16.80774215 slug/gal × 0.05949639108 = 1 gr/mm3
16.80774215 slugs per gallon = 1 grains per cubic millimeter.
grains per cubic millimeter = slugs per gallon × 0.0594963910787
For a page dedicated to this direction, see Slug per Gallon to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Understanding the Slug per Gallon (slug/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per gallon are in 1 grain per cubic millimeter?
1 grain per cubic millimeter equals 16.80774215 slugs per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to slug per gallon?
Multiply the grain per cubic millimeter value by 16.80774215. The converter above does this instantly to whatever precision you set.
How do I convert slug per gallon back to grain per cubic millimeter?
Use the reverse factor: 1 slug per gallon equals 0.0594963911 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 slug per gallon?
Slug per Gallon (slug/gal) is a unit of density.
Is the grain per cubic millimeter to slug per gallon conversion exact?
Yes. Both grain per cubic millimeter and slug per gallon are defined by fixed standards rather than physical artifacts, so the factor of 16.80774215 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.