Mass per volume density.
Ounce per Cubic inches to Grains per Quart Converter — oz/in3 to gr/qt
Convert Ounce per Cubic inch (oz/in3) to Grain per Quart (gr/qt) using the exact conversion factor (1 ounce per cubic inch = 25,265.625 grain per quart). See the formula, worked examples, and conversion table.
Ounce per Cubic inches 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 1729.994044 / 0.06847224418.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounce per Cubic inches to Grains per Quart
Ounce per Cubic inch 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 = ounce per cubic inches × 25265.625
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic inch equals 1729.99404439 base units, and 1 grain per quart equals 0.0684722441811 base units, so dividing one by the other gives the direct ounce per cubic inch-to-grain per quart factor of 25265.625.
Simple example
1 oz/in3 × 25265.625 = 25,265.625 gr/qt
1 ounce per cubic inch = 25,265.625 grains per quart.
Real-world example
1,000 oz/in3 × 25265.625 = 25,265,625 gr/qt
1,000 ounce per cubic inches = 25,265,625 grains per quart.
Conversion table
| Ounce per Cubic inch (oz/in3) | Grain per Quart (gr/qt) |
|---|---|
| 0.1 oz/in3 | 2,526.5625 gr/qt |
| 1 oz/in3 | 25,265.625 gr/qt |
| 10 oz/in3 | 252,656.25 gr/qt |
| 100 oz/in3 | 2,526,562.5 gr/qt |
| 1,000 oz/in3 | 25,265,625 gr/qt |
| 10,000 oz/in3 | 252,656,250 gr/qt |
Reverse conversion: Grain per Quart to Ounce per Cubic inch
1 gr/qt × 0.00003957946815 = 0.0000395795 oz/in3
1 grain per quart = 0.0000395795 ounce per cubic inches.
ounce per cubic inches = grains per quart × 0.0000395794681509
For a page dedicated to this direction, see Grain per Quart to Ounce per Cubic inch.
Understanding the Ounce per Cubic inch (oz/in3)
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 ounce per cubic inch?
1 ounce per cubic inch equals 25,265.625 grains per quart, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic inch to grain per quart?
Multiply the ounce per cubic inch value by 25265.625. The converter above does this instantly to whatever precision you set.
How do I convert grain per quart back to ounce per cubic inch?
Use the reverse factor: 1 grain per quart equals 0.0000395795 ounce per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic inch?
Ounce per Cubic inch (oz/in3) is a unit of density.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
Is the ounce per cubic inch to grain per quart conversion exact?
Yes. Both ounce per cubic inch and grain per quart are defined by fixed standards rather than physical artifacts, so the factor of 25265.625 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.