Mass per volume density.
Carats per Imperial gallon to Grains per Quart Converter — ct/imp gal to gr/qt
Convert Carat per Imperial gallon (ct/imp gal) to Grain per Quart (gr/qt) using the exact conversion factor (1 carat per imperial gallon = 0.6425063204 grain per quart). See the formula, worked examples, and conversion table.
Carats per Imperial gallon to Grains 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 0.04399384966 / 0.06847224418.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Imperial gallon to Grains per Quart
Carat per Imperial gallon and Grain 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
grains per quart = carats per imperial gallon × 0.642506320422
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per imperial gallon equals 0.0439938496598 base units, and 1 grain per quart equals 0.0684722441811 base units, so dividing one by the other gives the direct carat per imperial gallon-to-grain per quart factor of 0.642506320422.
Simple example
1 ct/imp gal × 0.6425063204 = 0.6425063204 gr/qt
1 carat per imperial gallon = 0.6425063204 grains per quart.
Real-world example
1,000 ct/imp gal × 0.6425063204 = 642.5063204 gr/qt
1,000 carats per imperial gallon = 642.5063204 grains per quart.
Conversion table
| Carat per Imperial gallon (ct/imp gal) | Grain per Quart (gr/qt) |
|---|---|
| 0.1 ct/imp gal | 0.064250632 gr/qt |
| 1 ct/imp gal | 0.6425063204 gr/qt |
| 10 ct/imp gal | 6.425063204 gr/qt |
| 100 ct/imp gal | 64.25063204 gr/qt |
| 1,000 ct/imp gal | 642.5063204 gr/qt |
| 10,000 ct/imp gal | 6,425.063204 gr/qt |
Reverse conversion: Grain per Quart to Carat per Imperial gallon
0.6425063204 gr/qt × 1.556404923 = 1 ct/imp gal
0.6425063204 grains per quart = 1 carats per imperial gallon.
carats per imperial gallon = grains per quart × 1.55640492275
For a page dedicated to this direction, see Grain per Quart to Carat per Imperial gallon.
Understanding the Carat per Imperial gallon (ct/imp gal)
Mass per volume density.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per quart are in 1 carat per imperial gallon?
1 carat per imperial gallon equals 0.6425063204 grains per quart, using the exact defined conversion factor rather than an estimate.
How do I convert carat per imperial gallon to grain per quart?
Multiply the carat per imperial gallon value by 0.6425063204. The converter above does this instantly to whatever precision you set.
How do I convert grain per quart back to carat per imperial gallon?
Use the reverse factor: 1 grain per quart equals 1.556404923 carats per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per imperial gallon?
Carat per Imperial gallon (ct/imp gal) is a unit of density.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
Is the carat per imperial gallon to grain per quart conversion exact?
Yes. Both carat per imperial gallon and grain per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.6425063204 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.