Mass per volume density.
Carats per Quart to Grains per Cubic Millimeter Converter — ct/qt to gr/mm3
Convert Carat per Quart (ct/qt) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 carat per quart = 0.0000032614 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Carats per Quart to Grains per Cubic Millimeter 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 / 64798.91.
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 Grains per Cubic Millimeter
Carat per Quart and Grain per Cubic Millimeter 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
grains per cubic millimeter = carats per quart × 0.00000326143822306
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 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct carat per quart-to-grain per cubic millimeter factor of 0.00000326143822306.
Simple example
1 ct/qt × 0.000003261438223 = 0.0000032614 gr/mm3
1 carat per quart = 0.0000032614 grains per cubic millimeter.
Real-world example
1,000 ct/qt × 0.000003261438223 = 0.0032614382 gr/mm3
1,000 carats per quart = 0.0032614382 grains per cubic millimeter.
Conversion table
| Carat per Quart (ct/qt) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 ct/qt | 3.261438e-7 gr/mm3 |
| 1 ct/qt | 0.0000032614 gr/mm3 |
| 10 ct/qt | 0.0000326144 gr/mm3 |
| 100 ct/qt | 0.0003261438 gr/mm3 |
| 1,000 ct/qt | 0.0032614382 gr/mm3 |
| 10,000 ct/qt | 0.0326143822 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Carat per Quart
0.0000032614 gr/mm3 × 306613.1969 = 0.9999882803 ct/qt
0.0000032614 grains per cubic millimeter = 0.9999882803 carats per quart.
carats per quart = grains per cubic millimeter × 306613.19688
For a page dedicated to this direction, see Grain per Cubic Millimeter to Carat per Quart.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic millimeter are in 1 carat per quart?
1 carat per quart equals 0.0000032614 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per quart to grain per cubic millimeter?
Multiply the carat per quart value by 0.000003261438223. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to carat per quart?
Use the reverse factor: 1 grain per cubic millimeter equals 306,613.1969 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 grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) is a unit of density.
Is the carat per quart to grain per cubic millimeter conversion exact?
Yes. Both carat per quart and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.000003261438223 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.