Mass per volume density.
Slugs per Gallon to Pounds per Imperial gallon Converter — slug/gal to lb/imp gal
Convert Slug per Gallon (slug/gal) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 slug per gallon = 38.63942122 pound per imperial gallon). See the formula, worked examples, and conversion table.
Slugs per Gallon to Pounds per Imperial 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 / 99.77637266.
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 Imperial gallon
Slug per Gallon and Pound per Imperial 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 imperial gallon = slugs per gallon × 38.639421217
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 imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct slug per gallon-to-pound per imperial gallon factor of 38.639421217.
Simple example
1 slug/gal × 38.63942122 = 38.63942122 lb/imp gal
1 slug per gallon = 38.63942122 pounds per imperial gallon.
Real-world example
1,000 slug/gal × 38.63942122 = 38,639.42122 lb/imp gal
1,000 slugs per gallon = 38,639.42122 pounds per imperial gallon.
Conversion table
| Slug per Gallon (slug/gal) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 slug/gal | 3.863942122 lb/imp gal |
| 1 slug/gal | 38.63942122 lb/imp gal |
| 10 slug/gal | 386.3942122 lb/imp gal |
| 100 slug/gal | 3,863.942122 lb/imp gal |
| 1,000 slug/gal | 38,639.42122 lb/imp gal |
| 10,000 slug/gal | 386,394.2122 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Slug per Gallon
38.63942122 lb/imp gal × 0.02588030484 = 1 slug/gal
38.63942122 pounds per imperial gallon = 1 slugs per gallon.
slugs per gallon = pounds per imperial gallon × 0.0258803048416
For a page dedicated to this direction, see Pound per Imperial gallon to Slug per Gallon.
Understanding the Slug per Gallon (slug/gal)
Mass per volume density.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per imperial gallon are in 1 slug per gallon?
1 slug per gallon equals 38.63942122 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert slug per gallon to pound per imperial gallon?
Multiply the slug per gallon value by 38.63942122. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to slug per gallon?
Use the reverse factor: 1 pound per imperial gallon equals 0.0258803048 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 imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
Is the slug per gallon to pound per imperial gallon conversion exact?
Yes. Both slug per gallon and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 38.63942122 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.