Mass per volume density.
Carats per Quart to Stones per Quart Converter — ct/qt to st/qt
Convert Carat per Quart (ct/qt) to Stone per Quart (st/qt) using the exact conversion factor (1 carat per quart = 0.0000314946 stone per quart). See the formula, worked examples, and conversion table.
Carats per Quart to Stones 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 0.2113376419 / 6710.27993.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Quart to Stones per Quart
Carat per Quart and Stone 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
stones per quart = carats per quart × 0.0000314946088836
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per quart equals 0.211337641887 base units, and 1 stone per quart equals 6710.27992975 base units, so dividing one by the other gives the direct carat per quart-to-stone per quart factor of 0.0000314946088836.
Simple example
1 ct/qt × 0.00003149460888 = 0.0000314946 st/qt
1 carat per quart = 0.0000314946 stones per quart.
Real-world example
1,000 ct/qt × 0.00003149460888 = 0.0314946089 st/qt
1,000 carats per quart = 0.0314946089 stones per quart.
Conversion table
| Carat per Quart (ct/qt) | Stone per Quart (st/qt) |
|---|---|
| 0.1 ct/qt | 0.0000031495 st/qt |
| 1 ct/qt | 0.0000314946 st/qt |
| 10 ct/qt | 0.0003149461 st/qt |
| 100 ct/qt | 0.0031494609 st/qt |
| 1,000 ct/qt | 0.0314946089 st/qt |
| 10,000 ct/qt | 0.3149460888 st/qt |
Reverse conversion: Stone per Quart to Carat per Quart
0.0000314946 st/qt × 31751.4659 = 0.9999997179 ct/qt
0.0000314946 stones per quart = 0.9999997179 carats per quart.
carats per quart = stones per quart × 31751.4659
For a page dedicated to this direction, see Stone per Quart to Carat per Quart.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
Understanding the Stone per Quart (st/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per quart are in 1 carat per quart?
1 carat per quart equals 0.0000314946 stones per quart, using the exact defined conversion factor rather than an estimate.
How do I convert carat per quart to stone per quart?
Multiply the carat per quart value by 0.00003149460888. The converter above does this instantly to whatever precision you set.
How do I convert stone per quart back to carat per quart?
Use the reverse factor: 1 stone per quart equals 31,751.4659 carats per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per quart?
Carat per Quart (ct/qt) is a unit of density.
What is a stone per quart?
Stone per Quart (st/qt) is a unit of density.
Is the carat per quart to stone per quart conversion exact?
Yes. Both carat per quart and stone per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.00003149460888 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.