Mass per volume density.
Grains per Gallon to Milligrams per Quart Converter — gr/gal to mg/qt
Convert Grain per Gallon (gr/gal) to Milligram per Quart (mg/qt) using the exact conversion factor (1 grain per gallon = 16.1997275 milligram per quart). See the formula, worked examples, and conversion table.
Grains per Gallon to Milligrams 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 0.01711806105 / 0.001056688209.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Gallon to Milligrams per Quart
Grain per Gallon and Milligram 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
milligrams per quart = grains per gallon × 16.1997275
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per gallon equals 0.0171180610453 base units, and 1 milligram per quart equals 0.00105668820943 base units, so dividing one by the other gives the direct grain per gallon-to-milligram per quart factor of 16.1997275.
Simple example
1 gr/gal × 16.1997275 = 16.1997275 mg/qt
1 grain per gallon = 16.1997275 milligrams per quart.
Real-world example
1,000 gr/gal × 16.1997275 = 16,199.7275 mg/qt
1,000 grains per gallon = 16,199.7275 milligrams per quart.
Conversion table
| Grain per Gallon (gr/gal) | Milligram per Quart (mg/qt) |
|---|---|
| 0.1 gr/gal | 1.61997275 mg/qt |
| 1 gr/gal | 16.1997275 mg/qt |
| 10 gr/gal | 161.997275 mg/qt |
| 100 gr/gal | 1,619.97275 mg/qt |
| 1,000 gr/gal | 16,199.7275 mg/qt |
| 10,000 gr/gal | 161,997.275 mg/qt |
Reverse conversion: Milligram per Quart to Grain per Gallon
16.1997275 mg/qt × 0.06172943341 = 1 gr/gal
16.1997275 milligrams per quart = 1 grains per gallon.
grains per gallon = milligrams per quart × 0.0617294334118
For a page dedicated to this direction, see Milligram per Quart to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Understanding the Milligram per Quart (mg/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per quart are in 1 grain per gallon?
1 grain per gallon equals 16.1997275 milligrams per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to milligram per quart?
Multiply the grain per gallon value by 16.1997275. The converter above does this instantly to whatever precision you set.
How do I convert milligram per quart back to grain per gallon?
Use the reverse factor: 1 milligram per quart equals 0.0617294334 grains per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
What is a milligram per quart?
Milligram per Quart (mg/qt) is a unit of density.
Is the grain per gallon to milligram per quart conversion exact?
Yes. Both grain per gallon and milligram per quart are defined by fixed standards rather than physical artifacts, so the factor of 16.1997275 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.