Mass per volume density.
Slug per Cubic inches to Grains per Cubic Millimeter Converter — slug/in3 to gr/mm3
Convert Slug per Cubic inch (slug/in3) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 slug per cubic inch = 13.74366634 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Slug 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 890574.5982 / 64798.91.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Slug per Cubic inches to Grains per Cubic Millimeter
Slug 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 = slug per cubic inches × 13.7436663392
This factor comes from each unit's defined relationship to the category's base unit: 1 slug per cubic inch equals 890574.598183 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct slug per cubic inch-to-grain per cubic millimeter factor of 13.7436663392.
Simple example
1 slug/in3 × 13.74366634 = 13.74366634 gr/mm3
1 slug per cubic inch = 13.74366634 grains per cubic millimeter.
Real-world example
1,000 slug/in3 × 13.74366634 = 13,743.66634 gr/mm3
1,000 slug per cubic inches = 13,743.66634 grains per cubic millimeter.
Conversion table
| Slug per Cubic inch (slug/in3) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 slug/in3 | 1.374366634 gr/mm3 |
| 1 slug/in3 | 13.74366634 gr/mm3 |
| 10 slug/in3 | 137.4366634 gr/mm3 |
| 100 slug/in3 | 1,374.366634 gr/mm3 |
| 1,000 slug/in3 | 13,743.66634 gr/mm3 |
| 10,000 slug/in3 | 137,436.6634 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Slug per Cubic inch
13.74366634 gr/mm3 × 0.07276078852 = 1 slug/in3
13.74366634 grains per cubic millimeter = 1 slug per cubic inches.
slug per cubic inches = grains per cubic millimeter × 0.0727607885204
For a page dedicated to this direction, see Grain per Cubic Millimeter to Slug per Cubic inch.
Understanding the Slug per Cubic inch (slug/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 slug per cubic inch?
1 slug per cubic inch equals 13.74366634 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert slug per cubic inch to grain per cubic millimeter?
Multiply the slug per cubic inch value by 13.74366634. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to slug per cubic inch?
Use the reverse factor: 1 grain per cubic millimeter equals 0.0727607885 slug per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug per cubic inch?
Slug per Cubic inch (slug/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 slug per cubic inch to grain per cubic millimeter conversion exact?
Yes. Both slug per cubic inch and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 13.74366634 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.