Mass per volume density.
Stones per Cup to Carats per Fluid ounce Converter — st/cup to ct/fl oz
Convert Stone per Cup (st/cup) to Carat per Fluid ounce (ct/fl oz) using the exact conversion factor (1 stone per cup = 3,968.933237 carat per fluid ounce). See the formula, worked examples, and conversion table.
Stones per Cup to Carats per Fluid ounce 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 26841.11972 / 6.76280454.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cup to Carats per Fluid ounce
Stone per Cup and Carat per Fluid ounce 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
carats per fluid ounce = stones per cup × 3968.9332375
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 carat per fluid ounce equals 6.76280454037 base units, so dividing one by the other gives the direct stone per cup-to-carat per fluid ounce factor of 3968.9332375.
Simple example
1 st/cup × 3968.933237 = 3,968.933237 ct/fl oz
1 stone per cup = 3,968.933237 carats per fluid ounce.
Real-world example
1,000 st/cup × 3968.933237 = 3,968,933.237 ct/fl oz
1,000 stones per cup = 3,968,933.237 carats per fluid ounce.
Conversion table
| Stone per Cup (st/cup) | Carat per Fluid ounce (ct/fl oz) |
|---|---|
| 0.1 st/cup | 396.8933237 ct/fl oz |
| 1 st/cup | 3,968.933237 ct/fl oz |
| 10 st/cup | 39,689.33237 ct/fl oz |
| 100 st/cup | 396,893.3237 ct/fl oz |
| 1,000 st/cup | 3,968,933.237 ct/fl oz |
| 10,000 st/cup | 39,689,332.38 ct/fl oz |
Reverse conversion: Carat per Fluid ounce to Stone per Cup
1 ct/fl oz × 0.0002519568711 = 0.0002519569 st/cup
1 carat per fluid ounce = 0.0002519569 stones per cup.
stones per cup = carats per fluid ounce × 0.000251956871068
For a page dedicated to this direction, see Carat per Fluid ounce to Stone per Cup.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Understanding the Carat per Fluid ounce (ct/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per fluid ounce are in 1 stone per cup?
1 stone per cup equals 3,968.933237 carats per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to carat per fluid ounce?
Multiply the stone per cup value by 3968.933237. The converter above does this instantly to whatever precision you set.
How do I convert carat per fluid ounce back to stone per cup?
Use the reverse factor: 1 carat per fluid ounce equals 0.0002519569 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
What is a carat per fluid ounce?
Carat per Fluid ounce (ct/fl oz) is a unit of density.
Is the stone per cup to carat per fluid ounce conversion exact?
Yes. Both stone per cup and carat per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 3968.933237 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.