Mass per volume density.
Stones per Milliliter to Carats per Cup Converter — st/mL to ct/cup
Convert Stone per Milliliter (st/mL) to Carat per Cup (ct/cup) using the exact conversion factor (1 stone per milliliter = 7,512,023.324 carat per cup). See the formula, worked examples, and conversion table.
Stones per Milliliter to Carats 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 6.35029318e+6 / 0.8453505675.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Milliliter to Carats per Cup
Stone per Milliliter and Carat 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
carats per cup = stones per milliliter × 7512023.32357
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per milliliter equals 6350293.18 base units, and 1 carat per cup equals 0.845350567546 base units, so dividing one by the other gives the direct stone per milliliter-to-carat per cup factor of 7512023.32357.
Simple example
1 st/mL × 7512023.324 = 7,512,023.324 ct/cup
1 stone per milliliter = 7,512,023.324 carats per cup.
Real-world example
1,000 st/mL × 7512023.324 = 7,512,023,324 ct/cup
1,000 stones per milliliter = 7,512,023,324 carats per cup.
Conversion table
| Stone per Milliliter (st/mL) | Carat per Cup (ct/cup) |
|---|---|
| 0.1 st/mL | 751,202.3324 ct/cup |
| 1 st/mL | 7,512,023.324 ct/cup |
| 10 st/mL | 75,120,233.24 ct/cup |
| 100 st/mL | 751,202,332.4 ct/cup |
| 1,000 st/mL | 7,512,023,324 ct/cup |
| 10,000 st/mL | 75,120,233,240 ct/cup |
Reverse conversion: Carat per Cup to Stone per Milliliter
1 ct/cup × 1.331199e-7 = 1.331199e-7 st/mL
1 carat per cup = 1.331199e-7 stones per milliliter.
stones per milliliter = carats per cup × 1.331199e-7
For a page dedicated to this direction, see Carat per Cup to Stone per Milliliter.
Understanding the Stone per Milliliter (st/mL)
Mass per volume density.
Understanding the Carat per Cup (ct/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per cup are in 1 stone per milliliter?
1 stone per milliliter equals 7,512,023.324 carats per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per milliliter to carat per cup?
Multiply the stone per milliliter value by 7512023.324. The converter above does this instantly to whatever precision you set.
How do I convert carat per cup back to stone per milliliter?
Use the reverse factor: 1 carat per cup equals 1.331199e-7 stones per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per milliliter?
Stone per Milliliter (st/mL) is a unit of density.
What is a carat per cup?
Carat per Cup (ct/cup) is a unit of density.
Is the stone per milliliter to carat per cup conversion exact?
Yes. Both stone per milliliter and carat per cup are defined by fixed standards rather than physical artifacts, so the factor of 7512023.324 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.