Mass per volume density.
Stones per Pint to Slugs per Cup Converter — st/pt to slug/cup
Convert Stone per Pint (st/pt) to Slug per Cup (slug/cup) using the exact conversion factor (1 stone per pint = 0.2175666512 slug per cup). See the formula, worked examples, and conversion table.
Stones per Pint 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 13420.55986 / 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 Pint to Slugs per Cup
Stone per Pint 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 pint × 0.217566651201
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per pint equals 13420.5598595 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct stone per pint-to-slug per cup factor of 0.217566651201.
Simple example
1 st/pt × 0.2175666512 = 0.2175666512 slug/cup
1 stone per pint = 0.2175666512 slugs per cup.
Real-world example
1,000 st/pt × 0.2175666512 = 217.5666512 slug/cup
1,000 stones per pint = 217.5666512 slugs per cup.
Conversion table
| Stone per Pint (st/pt) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 st/pt | 0.0217566651 slug/cup |
| 1 st/pt | 0.2175666512 slug/cup |
| 10 st/pt | 2.175666512 slug/cup |
| 100 st/pt | 21.75666512 slug/cup |
| 1,000 st/pt | 217.5666512 slug/cup |
| 10,000 st/pt | 2,175.666512 slug/cup |
Reverse conversion: Slug per Cup to Stone per Pint
0.2175666512 slug/cup × 4.596292651 = 1 st/pt
0.2175666512 slugs per cup = 1 stones per pint.
stones per pint = slugs per cup × 4.59629265092
For a page dedicated to this direction, see Slug per Cup to Stone per Pint.
Understanding the Stone per Pint (st/pt)
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 pint?
1 stone per pint equals 0.2175666512 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per pint to slug per cup?
Multiply the stone per pint value by 0.2175666512. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to stone per pint?
Use the reverse factor: 1 slug per cup equals 4.596292651 stones per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per pint?
Stone per Pint (st/pt) 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 pint to slug per cup conversion exact?
Yes. Both stone per pint and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.2175666512 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.