Mass per volume density.
Stones per Cup to Carats per Quart Converter — st/cup to ct/qt
Convert Stone per Cup (st/cup) to Carat per Quart (ct/qt) using the exact conversion factor (1 stone per cup = 127,005.8636 carat per quart). See the formula, worked examples, and conversion table.
Stones per Cup to Carats per Quart 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 / 0.2113376419.
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 Quart
Stone per Cup and Carat per Quart 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 quart = stones per cup × 127005.8636
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 quart equals 0.211337641887 base units, so dividing one by the other gives the direct stone per cup-to-carat per quart factor of 127005.8636.
Simple example
1 st/cup × 127005.8636 = 127,005.8636 ct/qt
1 stone per cup = 127,005.8636 carats per quart.
Real-world example
1,000 st/cup × 127005.8636 = 127,005,863.6 ct/qt
1,000 stones per cup = 127,005,863.6 carats per quart.
Conversion table
| Stone per Cup (st/cup) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 st/cup | 12,700.58636 ct/qt |
| 1 st/cup | 127,005.8636 ct/qt |
| 10 st/cup | 1,270,058.636 ct/qt |
| 100 st/cup | 12,700,586.36 ct/qt |
| 1,000 st/cup | 127,005,863.6 ct/qt |
| 10,000 st/cup | 1,270,058,636 ct/qt |
Reverse conversion: Carat per Quart to Stone per Cup
1 ct/qt × 0.000007873652221 = 0.0000078737 st/cup
1 carat per quart = 0.0000078737 stones per cup.
stones per cup = carats per quart × 0.00000787365222089
For a page dedicated to this direction, see Carat per Quart to Stone per Cup.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per quart are in 1 stone per cup?
1 stone per cup equals 127,005.8636 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to carat per quart?
Multiply the stone per cup value by 127005.8636. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to stone per cup?
Use the reverse factor: 1 carat per quart equals 0.0000078737 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 quart?
Carat per Quart (ct/qt) is a unit of density.
Is the stone per cup to carat per quart conversion exact?
Yes. Both stone per cup and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 127005.8636 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.