Mass per volume density.
Stones per Cubic yard to Carats per Quart Converter — st/yd3 to ct/qt
Convert Stone per Cubic yard (st/yd3) to Carat per Quart (ct/qt) using the exact conversion factor (1 stone per cubic yard = 39.30142223 carat per quart). See the formula, worked examples, and conversion table.
Stones per Cubic yard 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 8.305869898 / 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 Cubic yard to Carats per Quart
Stone per Cubic yard 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 cubic yard × 39.3014222335
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic yard equals 8.30586989761 base units, and 1 carat per quart equals 0.211337641887 base units, so dividing one by the other gives the direct stone per cubic yard-to-carat per quart factor of 39.3014222335.
Simple example
1 st/yd3 × 39.30142223 = 39.30142223 ct/qt
1 stone per cubic yard = 39.30142223 carats per quart.
Real-world example
1,000 st/yd3 × 39.30142223 = 39,301.42223 ct/qt
1,000 stones per cubic yard = 39,301.42223 carats per quart.
Conversion table
| Stone per Cubic yard (st/yd3) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 st/yd3 | 3.930142223 ct/qt |
| 1 st/yd3 | 39.30142223 ct/qt |
| 10 st/yd3 | 393.0142223 ct/qt |
| 100 st/yd3 | 3,930.142223 ct/qt |
| 1,000 st/yd3 | 39,301.42223 ct/qt |
| 10,000 st/yd3 | 393,014.2223 ct/qt |
Reverse conversion: Carat per Quart to Stone per Cubic yard
39.30142223 ct/qt × 0.02544437181 = 0.9999999999 st/yd3
39.30142223 carats per quart = 0.9999999999 stones per cubic yard.
stones per cubic yard = carats per quart × 0.0254443718108
For a page dedicated to this direction, see Carat per Quart to Stone per Cubic yard.
Understanding the Stone per Cubic yard (st/yd3)
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 cubic yard?
1 stone per cubic yard equals 39.30142223 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic yard to carat per quart?
Multiply the stone per cubic yard value by 39.30142223. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to stone per cubic yard?
Use the reverse factor: 1 carat per quart equals 0.0254443718 stones per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic yard?
Stone per Cubic yard (st/yd3) 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 cubic yard to carat per quart conversion exact?
Yes. Both stone per cubic yard and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 39.30142223 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.