Mass per volume density.
Slugs per Gallon to Pounds per Cup Converter — slug/gal to lb/cup
Convert Slug per Gallon (slug/gal) to Pound per Cup (lb/cup) using the exact conversion factor (1 slug per gallon = 2.010878035 pound per cup). See the formula, worked examples, and conversion table.
Slugs per Gallon to Pounds per Cup 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 / 1917.222837.
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 Cup
Slug per Gallon and Pound per Cup 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 cup = slugs per gallon × 2.01087803478
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 cup equals 1917.22283707 base units, so dividing one by the other gives the direct slug per gallon-to-pound per cup factor of 2.01087803478.
Simple example
1 slug/gal × 2.010878035 = 2.010878035 lb/cup
1 slug per gallon = 2.010878035 pounds per cup.
Real-world example
1,000 slug/gal × 2.010878035 = 2,010.878035 lb/cup
1,000 slugs per gallon = 2,010.878035 pounds per cup.
Conversion table
| Slug per Gallon (slug/gal) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 slug/gal | 0.2010878035 lb/cup |
| 1 slug/gal | 2.010878035 lb/cup |
| 10 slug/gal | 20.10878035 lb/cup |
| 100 slug/gal | 201.0878035 lb/cup |
| 1,000 slug/gal | 2,010.878035 lb/cup |
| 10,000 slug/gal | 20,108.78035 lb/cup |
Reverse conversion: Pound per Cup to Slug per Gallon
2.010878035 lb/cup × 0.4972952027 = 1 slug/gal
2.010878035 pounds per cup = 1 slugs per gallon.
slugs per gallon = pounds per cup × 0.497295202745
For a page dedicated to this direction, see Pound per Cup to Slug per Gallon.
Understanding the Slug per Gallon (slug/gal)
Mass per volume density.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cup are in 1 slug per gallon?
1 slug per gallon equals 2.010878035 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert slug per gallon to pound per cup?
Multiply the slug per gallon value by 2.010878035. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to slug per gallon?
Use the reverse factor: 1 pound per cup equals 0.4972952027 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 cup?
Pound per Cup (lb/cup) is a unit of density.
Is the slug per gallon to pound per cup conversion exact?
Yes. Both slug per gallon and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 2.010878035 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.