Mass per volume density.
Pounds per Quart to Slugs per Cup Converter — lb/qt to slug/cup
Convert Pound per Quart (lb/qt) to Slug per Cup (slug/cup) using the exact conversion factor (1 pound per quart = 0.0077702375 slug per cup). See the formula, worked examples, and conversion table.
Pounds per Quart 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 479.3057093 / 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 Quart to Slugs per Cup
Pound per Quart 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 quart × 0.0077702375429
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct pound per quart-to-slug per cup factor of 0.0077702375429.
Simple example
1 lb/qt × 0.007770237543 = 0.0077702375 slug/cup
1 pound per quart = 0.0077702375 slugs per cup.
Real-world example
1,000 lb/qt × 0.007770237543 = 7.770237543 slug/cup
1,000 pounds per quart = 7.770237543 slugs per cup.
Conversion table
| Pound per Quart (lb/qt) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 lb/qt | 0.0007770238 slug/cup |
| 1 lb/qt | 0.0077702375 slug/cup |
| 10 lb/qt | 0.0777023754 slug/cup |
| 100 lb/qt | 0.7770237543 slug/cup |
| 1,000 lb/qt | 7.770237543 slug/cup |
| 10,000 lb/qt | 77.70237543 slug/cup |
Reverse conversion: Slug per Cup to Pound per Quart
0.0077702375 slug/cup × 128.6961942 = 0.9999999945 lb/qt
0.0077702375 slugs per cup = 0.9999999945 pounds per quart.
pounds per quart = slugs per cup × 128.696194226
For a page dedicated to this direction, see Slug per Cup to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
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 quart?
1 pound per quart equals 0.0077702375 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to slug per cup?
Multiply the pound per quart value by 0.007770237543. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to pound per quart?
Use the reverse factor: 1 slug per cup equals 128.6961942 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) 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 quart to slug per cup conversion exact?
Yes. Both pound per quart and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.007770237543 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.