Mass per volume density.
Grams per Gallon to Grains per Quart Converter — g/gal to gr/qt
Convert Gram per Gallon (g/gal) to Grain per Quart (gr/qt) using the exact conversion factor (1 gram per gallon = 3.858089588 grain per quart). See the formula, worked examples, and conversion table.
Grams per 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 0.2641720524 / 0.06847224418.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Gallon to Grains per Quart
Gram per 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 = grams per gallon × 3.85808958824
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per gallon equals 0.264172052358 base units, and 1 grain per quart equals 0.0684722441811 base units, so dividing one by the other gives the direct gram per gallon-to-grain per quart factor of 3.85808958824.
Simple example
1 g/gal × 3.858089588 = 3.858089588 gr/qt
1 gram per gallon = 3.858089588 grains per quart.
Real-world example
1,000 g/gal × 3.858089588 = 3,858.089588 gr/qt
1,000 grams per gallon = 3,858.089588 grains per quart.
Conversion table
| Gram per Gallon (g/gal) | Grain per Quart (gr/qt) |
|---|---|
| 0.1 g/gal | 0.3858089588 gr/qt |
| 1 g/gal | 3.858089588 gr/qt |
| 10 g/gal | 38.58089588 gr/qt |
| 100 g/gal | 385.8089588 gr/qt |
| 1,000 g/gal | 3,858.089588 gr/qt |
| 10,000 g/gal | 38,580.89588 gr/qt |
Reverse conversion: Grain per Quart to Gram per Gallon
3.858089588 gr/qt × 0.25919564 = 0.9999999999 g/gal
3.858089588 grains per quart = 0.9999999999 grams per gallon.
grams per gallon = grains per quart × 0.25919564
For a page dedicated to this direction, see Grain per Quart to Gram per Gallon.
Understanding the Gram per Gallon (g/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 gram per gallon?
1 gram per gallon equals 3.858089588 grains per quart, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to grain per quart?
Multiply the gram per gallon value by 3.858089588. The converter above does this instantly to whatever precision you set.
How do I convert grain per quart back to gram per gallon?
Use the reverse factor: 1 grain per quart equals 0.25919564 grams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of density.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
Is the gram per gallon to grain per quart conversion exact?
Yes. Both gram per gallon and grain per quart are defined by fixed standards rather than physical artifacts, so the factor of 3.858089588 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.