Mass per volume density.
Slugs per Imperial gallon to Pounds per Gallon Converter — slug/imp gal to lb/gal
Convert Slug per Imperial gallon (slug/imp gal) to Pound per Gallon (lb/gal) using the exact conversion factor (1 slug per imperial gallon = 26.79049965 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Slugs per Imperial 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 3210.209859 / 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 Imperial gallon to Pounds per Gallon
Slug per Imperial 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 imperial gallon × 26.7904996479
This factor comes from each unit's defined relationship to the category's base unit: 1 slug per imperial gallon equals 3210.20985885 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct slug per imperial gallon-to-pound per gallon factor of 26.7904996479.
Simple example
1 slug/imp gal × 26.79049965 = 26.79049965 lb/gal
1 slug per imperial gallon = 26.79049965 pounds per gallon.
Real-world example
1,000 slug/imp gal × 26.79049965 = 26,790.49965 lb/gal
1,000 slugs per imperial gallon = 26,790.49965 pounds per gallon.
Conversion table
| Slug per Imperial gallon (slug/imp gal) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 slug/imp gal | 2.679049965 lb/gal |
| 1 slug/imp gal | 26.79049965 lb/gal |
| 10 slug/imp gal | 267.9049965 lb/gal |
| 100 slug/imp gal | 2,679.049965 lb/gal |
| 1,000 slug/imp gal | 26,790.49965 lb/gal |
| 10,000 slug/imp gal | 267,904.9965 lb/gal |
Reverse conversion: Pound per Gallon to Slug per Imperial gallon
26.79049965 lb/gal × 0.03732666479 = 1 slug/imp gal
26.79049965 pounds per gallon = 1 slugs per imperial gallon.
slugs per imperial gallon = pounds per gallon × 0.0373266647932
For a page dedicated to this direction, see Pound per Gallon to Slug per Imperial gallon.
Understanding the Slug per Imperial gallon (slug/imp 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 imperial gallon?
1 slug per imperial gallon equals 26.79049965 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert slug per imperial gallon to pound per gallon?
Multiply the slug per imperial gallon value by 26.79049965. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to slug per imperial gallon?
Use the reverse factor: 1 pound per gallon equals 0.0373266648 slugs per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug per imperial gallon?
Slug per Imperial gallon (slug/imp 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 imperial gallon to pound per gallon conversion exact?
Yes. Both slug per imperial gallon and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 26.79049965 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.