Mass per volume density.
Carats per Quart to Stones per Milliliter Converter — ct/qt to st/mL
Convert Carat per Quart (ct/qt) to Stone per Milliliter (st/mL) using the exact conversion factor (1 carat per quart = 3.327998e-8 stone per milliliter). See the formula, worked examples, and conversion table.
Carats per Quart to Stones per Milliliter 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 / 6.35029318e+6.
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 Milliliter
Carat per Quart and Stone per Milliliter 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 milliliter = carats per quart × 3.327998e-8
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 milliliter equals 6350293.18 base units, so dividing one by the other gives the direct carat per quart-to-stone per milliliter factor of 3.327998e-8.
Simple example
1 ct/qt × 3.327998e-8 = 3.327998e-8 st/mL
1 carat per quart = 3.327998e-8 stones per milliliter.
Real-world example
1,000 ct/qt × 3.327998e-8 = 0.00003328 st/mL
1,000 carats per quart = 0.00003328 stones per milliliter.
Conversion table
| Carat per Quart (ct/qt) | Stone per Milliliter (st/mL) |
|---|---|
| 0.1 ct/qt | 3.327998e-9 st/mL |
| 1 ct/qt | 3.327998e-8 st/mL |
| 10 ct/qt | 3.327998e-7 st/mL |
| 100 ct/qt | 0.000003328 st/mL |
| 1,000 ct/qt | 0.00003328 st/mL |
| 10,000 ct/qt | 0.0003327998 st/mL |
Reverse conversion: Stone per Milliliter to Carat per Quart
3.327998e-8 st/mL × 30048093.29 = 0.9999999439 ct/qt
3.327998e-8 stones per milliliter = 0.9999999439 carats per quart.
carats per quart = stones per milliliter × 30048093.2943
For a page dedicated to this direction, see Stone per Milliliter to Carat per Quart.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
Understanding the Stone per Milliliter (st/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per milliliter are in 1 carat per quart?
1 carat per quart equals 3.327998e-8 stones per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per quart to stone per milliliter?
Multiply the carat per quart value by 3.327998e-8. The converter above does this instantly to whatever precision you set.
How do I convert stone per milliliter back to carat per quart?
Use the reverse factor: 1 stone per milliliter equals 30,048,093.29 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 milliliter?
Stone per Milliliter (st/mL) is a unit of density.
Is the carat per quart to stone per milliliter conversion exact?
Yes. Both carat per quart and stone per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 3.327998e-8 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.