Mass per volume density.
Stones per Gallon to Slugs per Cup Converter — st/gal to slug/cup
Convert Stone per Gallon (st/gal) to Slug per Cup (slug/cup) using the exact conversion factor (1 stone per gallon = 0.0271958314 slug per cup). See the formula, worked examples, and conversion table.
Stones per Gallon 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 1677.569982 / 61684.82065.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Gallon to Slugs per Cup
Stone per Gallon 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 = stones per gallon × 0.0271958314001
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per gallon equals 1677.56998244 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct stone per gallon-to-slug per cup factor of 0.0271958314001.
Simple example
1 st/gal × 0.0271958314 = 0.0271958314 slug/cup
1 stone per gallon = 0.0271958314 slugs per cup.
Real-world example
1,000 st/gal × 0.0271958314 = 27.1958314 slug/cup
1,000 stones per gallon = 27.1958314 slugs per cup.
Conversion table
| Stone per Gallon (st/gal) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 st/gal | 0.0027195831 slug/cup |
| 1 st/gal | 0.0271958314 slug/cup |
| 10 st/gal | 0.271958314 slug/cup |
| 100 st/gal | 2.71958314 slug/cup |
| 1,000 st/gal | 27.1958314 slug/cup |
| 10,000 st/gal | 271.958314 slug/cup |
Reverse conversion: Slug per Cup to Stone per Gallon
0.0271958314 slug/cup × 36.77034121 = 1 st/gal
0.0271958314 slugs per cup = 1 stones per gallon.
stones per gallon = slugs per cup × 36.7703412073
For a page dedicated to this direction, see Slug per Cup to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
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 stone per gallon?
1 stone per gallon equals 0.0271958314 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to slug per cup?
Multiply the stone per gallon value by 0.0271958314. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to stone per gallon?
Use the reverse factor: 1 slug per cup equals 36.77034121 stones per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
What is a slug per cup?
Slug per Cup (slug/cup) is a unit of density.
Is the stone per gallon to slug per cup conversion exact?
Yes. Both stone per gallon and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.0271958314 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.