Mass per volume density.
Grains per Cubic Meter to Carats per Quart Converter — gr/m3 to ct/qt
Convert Grain per Cubic Meter (gr/m3) to Carat per Quart (ct/qt) using the exact conversion factor (1 grain per cubic meter = 0.0003066132 carat per quart). See the formula, worked examples, and conversion table.
Grains per Cubic Meter 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 6.479891e-5 / 0.2113376419.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic Meter to Carats per Quart
Grain per Cubic Meter 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 = grains per cubic meter × 0.00030661319688
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic meter equals 0.00006479891 base units, and 1 carat per quart equals 0.211337641887 base units, so dividing one by the other gives the direct grain per cubic meter-to-carat per quart factor of 0.00030661319688.
Simple example
1 gr/m3 × 0.0003066131969 = 0.0003066132 ct/qt
1 grain per cubic meter = 0.0003066132 carats per quart.
Real-world example
1,000 gr/m3 × 0.0003066131969 = 0.3066131969 ct/qt
1,000 grains per cubic meter = 0.3066131969 carats per quart.
Conversion table
| Grain per Cubic Meter (gr/m3) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 gr/m3 | 0.0000306613 ct/qt |
| 1 gr/m3 | 0.0003066132 ct/qt |
| 10 gr/m3 | 0.003066132 ct/qt |
| 100 gr/m3 | 0.0306613197 ct/qt |
| 1,000 gr/m3 | 0.3066131969 ct/qt |
| 10,000 gr/m3 | 3.066131969 ct/qt |
Reverse conversion: Carat per Quart to Grain per Cubic Meter
0.0003066132 ct/qt × 3261.438223 = 1.00000001 gr/m3
0.0003066132 carats per quart = 1.00000001 grains per cubic meter.
grains per cubic meter = carats per quart × 3261.43822306
For a page dedicated to this direction, see Carat per Quart to Grain per Cubic Meter.
Understanding the Grain per Cubic Meter (gr/m3)
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 grain per cubic meter?
1 grain per cubic meter equals 0.0003066132 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic meter to carat per quart?
Multiply the grain per cubic meter value by 0.0003066131969. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to grain per cubic meter?
Use the reverse factor: 1 carat per quart equals 3,261.438223 grains per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic meter?
Grain per Cubic Meter (gr/m3) is a unit of density.
What is a carat per quart?
Carat per Quart (ct/qt) is a unit of density.
Is the grain per cubic meter to carat per quart conversion exact?
Yes. Both grain per cubic meter and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.0003066131969 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.