Mass per volume density.
Slugs per Gallon to Pounds per Gallon Converter — slug/gal to lb/gal
Convert Slug per Gallon (slug/gal) to Pound per Gallon (lb/gal) using the exact conversion factor (1 slug per gallon = 32.17404856 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Slugs per Gallon to Pounds 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 3855.301291 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Slugs per Gallon to Pounds per Gallon
Slug per Gallon and Pound 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
pounds per gallon = slugs per gallon × 32.1740485564
This factor comes from each unit's defined relationship to the category's base unit: 1 slug per gallon equals 3855.30129084 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct slug per gallon-to-pound per gallon factor of 32.1740485564.
Simple example
1 slug/gal × 32.17404856 = 32.17404856 lb/gal
1 slug per gallon = 32.17404856 pounds per gallon.
Real-world example
1,000 slug/gal × 32.17404856 = 32,174.04856 lb/gal
1,000 slugs per gallon = 32,174.04856 pounds per gallon.
Conversion table
| Slug per Gallon (slug/gal) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 slug/gal | 3.217404856 lb/gal |
| 1 slug/gal | 32.17404856 lb/gal |
| 10 slug/gal | 321.7404856 lb/gal |
| 100 slug/gal | 3,217.404856 lb/gal |
| 1,000 slug/gal | 32,174.04856 lb/gal |
| 10,000 slug/gal | 321,740.4856 lb/gal |
Reverse conversion: Pound per Gallon to Slug per Gallon
32.17404856 lb/gal × 0.03108095017 = 1 slug/gal
32.17404856 pounds per gallon = 1 slugs per gallon.
slugs per gallon = pounds per gallon × 0.0310809501716
For a page dedicated to this direction, see Pound per Gallon to Slug per Gallon.
Understanding the Slug per Gallon (slug/gal)
Mass per volume density.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per gallon are in 1 slug per gallon?
1 slug per gallon equals 32.17404856 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert slug per gallon to pound per gallon?
Multiply the slug per gallon value by 32.17404856. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to slug per gallon?
Use the reverse factor: 1 pound per gallon equals 0.0310809502 slugs per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug per gallon?
Slug per Gallon (slug/gal) is a unit of density.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Is the slug per gallon to pound per gallon conversion exact?
Yes. Both slug per gallon and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 32.17404856 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.