Mass per volume density.
Slug per Cubic inches to Slugs per Gallon Converter — slug/in3 to slug/gal
Convert Slug per Cubic inch (slug/in3) to Slug per Gallon (slug/gal) using the exact conversion factor (1 slug per cubic inch = 231 slug per gallon). See the formula, worked examples, and conversion table.
Slug per Cubic inches 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 890574.5982 / 3855.301291.
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 Slugs per Gallon
Slug per Cubic inch 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 = slug per cubic inches × 231
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 slug per gallon equals 3855.30129084 base units, so dividing one by the other gives the direct slug per cubic inch-to-slug per gallon factor of 231.
Simple example
1 slug/in3 × 231 = 231 slug/gal
1 slug per cubic inch = 231 slugs per gallon.
Real-world example
1,000 slug/in3 × 231 = 231,000 slug/gal
1,000 slug per cubic inches = 231,000 slugs per gallon.
Conversion table
| Slug per Cubic inch (slug/in3) | Slug per Gallon (slug/gal) |
|---|---|
| 0.1 slug/in3 | 23.1 slug/gal |
| 1 slug/in3 | 231 slug/gal |
| 10 slug/in3 | 2,310 slug/gal |
| 100 slug/in3 | 23,100 slug/gal |
| 1,000 slug/in3 | 231,000 slug/gal |
| 10,000 slug/in3 | 2,310,000 slug/gal |
Reverse conversion: Slug per Gallon to Slug per Cubic inch
231 slug/gal × 0.004329004329 = 1 slug/in3
231 slugs per gallon = 1 slug per cubic inch.
slug per cubic inches = slugs per gallon × 0.004329004329
For a page dedicated to this direction, see Slug per Gallon to Slug per Cubic inch.
Understanding the Slug per Cubic inch (slug/in3)
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 slug per cubic inch?
1 slug per cubic inch equals 231 slugs per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert slug per cubic inch to slug per gallon?
Multiply the slug per cubic inch value by 231. The converter above does this instantly to whatever precision you set.
How do I convert slug per gallon back to slug per cubic inch?
Use the reverse factor: 1 slug per gallon equals 0.0043290043 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 slug per gallon?
Slug per Gallon (slug/gal) is a unit of density.
Is the slug per cubic inch to slug per gallon conversion exact?
Yes. Both slug per cubic inch and slug per gallon are defined by fixed standards rather than physical artifacts, so the factor of 231 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.