Mass per volume density.
Stones per Cubic Millimeter to Carats per Quart Converter — st/mm3 to ct/qt
Convert Stone per Cubic Millimeter (st/mm3) to Carat per Quart (ct/qt) using the exact conversion factor (1 stone per cubic millimeter = 30,048,093,290 carat per quart). See the formula, worked examples, and conversion table.
Stones per Cubic Millimeter 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 6.35029318e+9 / 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 Millimeter to Carats per Quart
Stone per Cubic Millimeter 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 millimeter × 30048093294.3
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic millimeter equals 6350293180 base units, and 1 carat per quart equals 0.211337641887 base units, so dividing one by the other gives the direct stone per cubic millimeter-to-carat per quart factor of 30048093294.3.
Simple example
1 st/mm3 × 30048093290 = 30,048,093,290 ct/qt
1 stone per cubic millimeter = 30,048,093,290 carats per quart.
Real-world example
1,000 st/mm3 × 30048093290 = 3.004809e+13 ct/qt
1,000 stones per cubic millimeter = 3.004809e+13 carats per quart.
Conversion table
| Stone per Cubic Millimeter (st/mm3) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 st/mm3 | 3,004,809,329 ct/qt |
| 1 st/mm3 | 30,048,093,290 ct/qt |
| 10 st/mm3 | 300,480,932,900 ct/qt |
| 100 st/mm3 | 3.004809e+12 ct/qt |
| 1,000 st/mm3 | 3.004809e+13 ct/qt |
| 10,000 st/mm3 | 3.004809e+14 ct/qt |
Reverse conversion: Carat per Quart to Stone per Cubic Millimeter
1 ct/qt × 3.327998e-11 = 3.327998e-11 st/mm3
1 carat per quart = 3.327998e-11 stones per cubic millimeter.
stones per cubic millimeter = carats per quart × 3.327998e-11
For a page dedicated to this direction, see Carat per Quart to Stone per Cubic Millimeter.
Understanding the Stone per Cubic Millimeter (st/mm3)
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 millimeter?
1 stone per cubic millimeter equals 30,048,093,290 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic millimeter to carat per quart?
Multiply the stone per cubic millimeter value by 30048093290. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to stone per cubic millimeter?
Use the reverse factor: 1 carat per quart equals 3.327998e-11 stones per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic millimeter?
Stone per Cubic Millimeter (st/mm3) 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 millimeter to carat per quart conversion exact?
Yes. Both stone per cubic millimeter and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 30048093290 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.