Mass per volume density.
Pounds per Cup to Slugs per Cup Converter — lb/cup to slug/cup
Convert Pound per Cup (lb/cup) to Slug per Cup (slug/cup) using the exact conversion factor (1 pound per cup = 0.0310809502 slug per cup). See the formula, worked examples, and conversion table.
Pounds per Cup to Slugs 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 1917.222837 / 61684.82065.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Slugs per Cup
Pound per Cup and Slug 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
slugs per cup = pounds per cup × 0.0310809501716
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct pound per cup-to-slug per cup factor of 0.0310809501716.
Simple example
1 lb/cup × 0.03108095017 = 0.0310809502 slug/cup
1 pound per cup = 0.0310809502 slugs per cup.
Real-world example
1,000 lb/cup × 0.03108095017 = 31.08095017 slug/cup
1,000 pounds per cup = 31.08095017 slugs per cup.
Conversion table
| Pound per Cup (lb/cup) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 lb/cup | 0.003108095 slug/cup |
| 1 lb/cup | 0.0310809502 slug/cup |
| 10 lb/cup | 0.3108095017 slug/cup |
| 100 lb/cup | 3.108095017 slug/cup |
| 1,000 lb/cup | 31.08095017 slug/cup |
| 10,000 lb/cup | 310.8095017 slug/cup |
Reverse conversion: Slug per Cup to Pound per Cup
0.0310809502 slug/cup × 32.17404856 = 1.000000001 lb/cup
0.0310809502 slugs per cup = 1.000000001 pounds per cup.
pounds per cup = slugs per cup × 32.1740485564
For a page dedicated to this direction, see Slug per Cup to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Slug per Cup (slug/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many slugs per cup are in 1 pound per cup?
1 pound per cup equals 0.0310809502 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to slug per cup?
Multiply the pound per cup value by 0.03108095017. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to pound per cup?
Use the reverse factor: 1 slug per cup equals 32.17404856 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a slug per cup?
Slug per Cup (slug/cup) is a unit of density.
Is the pound per cup to slug per cup conversion exact?
Yes. Both pound per cup and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.03108095017 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.