Mass per volume density.
Grain per Cubic inches to Carats per Quart Converter — gr/in3 to ct/qt
Convert Grain per Cubic inch (gr/in3) to Carat per Quart (ct/qt) using the exact conversion factor (1 grain per cubic inch = 18.71068526 carat per quart). See the formula, worked examples, and conversion table.
Grain per Cubic inches 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 3.954272101 / 0.2113376419.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grain per Cubic inches to Carats per Quart
Grain per Cubic inch 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 = grain per cubic inches × 18.7106852625
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic inch equals 3.95427210146 base units, and 1 carat per quart equals 0.211337641887 base units, so dividing one by the other gives the direct grain per cubic inch-to-carat per quart factor of 18.7106852625.
Simple example
1 gr/in3 × 18.71068526 = 18.71068526 ct/qt
1 grain per cubic inch = 18.71068526 carats per quart.
Real-world example
1,000 gr/in3 × 18.71068526 = 18,710.68526 ct/qt
1,000 grain per cubic inches = 18,710.68526 carats per quart.
Conversion table
| Grain per Cubic inch (gr/in3) | Carat per Quart (ct/qt) |
|---|---|
| 0.1 gr/in3 | 1.871068526 ct/qt |
| 1 gr/in3 | 18.71068526 ct/qt |
| 10 gr/in3 | 187.1068526 ct/qt |
| 100 gr/in3 | 1,871.068526 ct/qt |
| 1,000 gr/in3 | 18,710.68526 ct/qt |
| 10,000 gr/in3 | 187,106.8526 ct/qt |
Reverse conversion: Carat per Quart to Grain per Cubic inch
18.71068526 ct/qt × 0.05344539689 = 0.9999999999 gr/in3
18.71068526 carats per quart = 0.9999999999 grain per cubic inches.
grain per cubic inches = carats per quart × 0.0534453968933
For a page dedicated to this direction, see Carat per Quart to Grain per Cubic inch.
Understanding the Grain per Cubic inch (gr/in3)
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 inch?
1 grain per cubic inch equals 18.71068526 carats per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic inch to carat per quart?
Multiply the grain per cubic inch value by 18.71068526. The converter above does this instantly to whatever precision you set.
How do I convert carat per quart back to grain per cubic inch?
Use the reverse factor: 1 carat per quart equals 0.0534453969 grain per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic inch?
Grain per Cubic inch (gr/in3) 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 inch to carat per quart conversion exact?
Yes. Both grain per cubic inch and carat per quart are defined by fixed standards rather than physical artifacts, so the factor of 18.71068526 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.