Mass per volume density.
Stones per Fluid ounce to Slugs per Cup Converter — st/fl oz to slug/cup
Convert Stone per Fluid ounce (st/fl oz) to Slug per Cup (slug/cup) using the exact conversion factor (1 stone per fluid ounce = 3.481066419 slug per cup). See the formula, worked examples, and conversion table.
Stones per Fluid ounce 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 214728.9578 / 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 Fluid ounce to Slugs per Cup
Stone per Fluid ounce 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 fluid ounce × 3.48106641922
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per fluid ounce equals 214728.957752 base units, and 1 slug per cup equals 61684.8206534 base units, so dividing one by the other gives the direct stone per fluid ounce-to-slug per cup factor of 3.48106641922.
Simple example
1 st/fl oz × 3.481066419 = 3.481066419 slug/cup
1 stone per fluid ounce = 3.481066419 slugs per cup.
Real-world example
1,000 st/fl oz × 3.481066419 = 3,481.066419 slug/cup
1,000 stones per fluid ounce = 3,481.066419 slugs per cup.
Conversion table
| Stone per Fluid ounce (st/fl oz) | Slug per Cup (slug/cup) |
|---|---|
| 0.1 st/fl oz | 0.3481066419 slug/cup |
| 1 st/fl oz | 3.481066419 slug/cup |
| 10 st/fl oz | 34.81066419 slug/cup |
| 100 st/fl oz | 348.1066419 slug/cup |
| 1,000 st/fl oz | 3,481.066419 slug/cup |
| 10,000 st/fl oz | 34,810.66419 slug/cup |
Reverse conversion: Slug per Cup to Stone per Fluid ounce
3.481066419 slug/cup × 0.2872682907 = 0.9999999999 st/fl oz
3.481066419 slugs per cup = 0.9999999999 stones per fluid ounce.
stones per fluid ounce = slugs per cup × 0.287268290682
For a page dedicated to this direction, see Slug per Cup to Stone per Fluid ounce.
Understanding the Stone per Fluid ounce (st/fl oz)
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 fluid ounce?
1 stone per fluid ounce equals 3.481066419 slugs per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per fluid ounce to slug per cup?
Multiply the stone per fluid ounce value by 3.481066419. The converter above does this instantly to whatever precision you set.
How do I convert slug per cup back to stone per fluid ounce?
Use the reverse factor: 1 slug per cup equals 0.2872682907 stones per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per fluid ounce?
Stone per Fluid ounce (st/fl oz) 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 fluid ounce to slug per cup conversion exact?
Yes. Both stone per fluid ounce and slug per cup are defined by fixed standards rather than physical artifacts, so the factor of 3.481066419 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.