Mass per volume density.
Grains per Cubic Millimeter to Slugs per Quart Converter — gr/mm3 to slug/qt
Convert Grain per Cubic Millimeter (gr/mm3) to Slug per Quart (slug/qt) using the exact conversion factor (1 grain per cubic millimeter = 4.201935537 slug per quart). See the formula, worked examples, and conversion table.
Grains per Cubic Millimeter to Slugs per Quart 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 / 15421.20516.
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 Quart
Grain per Cubic Millimeter and Slug per Quart 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 quart = grains per cubic millimeter × 4.20193553705
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 quart equals 15421.2051633 base units, so dividing one by the other gives the direct grain per cubic millimeter-to-slug per quart factor of 4.20193553705.
Simple example
1 gr/mm3 × 4.201935537 = 4.201935537 slug/qt
1 grain per cubic millimeter = 4.201935537 slugs per quart.
Real-world example
1,000 gr/mm3 × 4.201935537 = 4,201.935537 slug/qt
1,000 grains per cubic millimeter = 4,201.935537 slugs per quart.
Conversion table
| Grain per Cubic Millimeter (gr/mm3) | Slug per Quart (slug/qt) |
|---|---|
| 0.1 gr/mm3 | 0.4201935537 slug/qt |
| 1 gr/mm3 | 4.201935537 slug/qt |
| 10 gr/mm3 | 42.01935537 slug/qt |
| 100 gr/mm3 | 420.1935537 slug/qt |
| 1,000 gr/mm3 | 4,201.935537 slug/qt |
| 10,000 gr/mm3 | 42,019.35537 slug/qt |
Reverse conversion: Slug per Quart to Grain per Cubic Millimeter
4.201935537 slug/qt × 0.2379855643 = 1 gr/mm3
4.201935537 slugs per quart = 1 grains per cubic millimeter.
grains per cubic millimeter = slugs per quart × 0.237985564315
For a page dedicated to this direction, see Slug per Quart to Grain per Cubic Millimeter.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Understanding the Slug per Quart (slug/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per quart are in 1 grain per cubic millimeter?
1 grain per cubic millimeter equals 4.201935537 slugs per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic millimeter to slug per quart?
Multiply the grain per cubic millimeter value by 4.201935537. The converter above does this instantly to whatever precision you set.
How do I convert slug per quart back to grain per cubic millimeter?
Use the reverse factor: 1 slug per quart equals 0.2379855643 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 quart?
Slug per Quart (slug/qt) is a unit of density.
Is the grain per cubic millimeter to slug per quart conversion exact?
Yes. Both grain per cubic millimeter and slug per quart are defined by fixed standards rather than physical artifacts, so the factor of 4.201935537 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.