Mass per volume density.
Grains per Quart to Grams per Imperial gallon Converter — gr/qt to g/imp gal
Convert Grain per Quart (gr/qt) to Gram per Imperial gallon (g/imp gal) using the exact conversion factor (1 grain per quart = 0.3112809845 gram per imperial gallon). See the formula, worked examples, and conversion table.
Grains per Quart to Grams per Imperial gallon 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 0.06847224418 / 0.2199692483.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Quart to Grams per Imperial gallon
Grain per Quart and Gram per Imperial gallon 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
grams per imperial gallon = grains per quart × 0.311280984549
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per quart equals 0.0684722441811 base units, and 1 gram per imperial gallon equals 0.219969248299 base units, so dividing one by the other gives the direct grain per quart-to-gram per imperial gallon factor of 0.311280984549.
Simple example
1 gr/qt × 0.3112809845 = 0.3112809845 g/imp gal
1 grain per quart = 0.3112809845 grams per imperial gallon.
Real-world example
1,000 gr/qt × 0.3112809845 = 311.2809845 g/imp gal
1,000 grains per quart = 311.2809845 grams per imperial gallon.
Conversion table
| Grain per Quart (gr/qt) | Gram per Imperial gallon (g/imp gal) |
|---|---|
| 0.1 gr/qt | 0.0311280985 g/imp gal |
| 1 gr/qt | 0.3112809845 g/imp gal |
| 10 gr/qt | 3.112809845 g/imp gal |
| 100 gr/qt | 31.12809845 g/imp gal |
| 1,000 gr/qt | 311.2809845 g/imp gal |
| 10,000 gr/qt | 3,112.809845 g/imp gal |
Reverse conversion: Gram per Imperial gallon to Grain per Quart
0.3112809845 g/imp gal × 3.212531602 = 0.9999999998 gr/qt
0.3112809845 grams per imperial gallon = 0.9999999998 grains per quart.
grains per quart = grams per imperial gallon × 3.21253160211
For a page dedicated to this direction, see Gram per Imperial gallon to Grain per Quart.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Understanding the Gram per Imperial gallon (g/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per imperial gallon are in 1 grain per quart?
1 grain per quart equals 0.3112809845 grams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per quart to gram per imperial gallon?
Multiply the grain per quart value by 0.3112809845. The converter above does this instantly to whatever precision you set.
How do I convert gram per imperial gallon back to grain per quart?
Use the reverse factor: 1 gram per imperial gallon equals 3.212531602 grains per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
What is a gram per imperial gallon?
Gram per Imperial gallon (g/imp gal) is a unit of density.
Is the grain per quart to gram per imperial gallon conversion exact?
Yes. Both grain per quart and gram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.3112809845 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.