Mass per volume density.
Ounce per Cubic inches to Grains per Milliliter Converter — oz/in3 to gr/mL
Convert Ounce per Cubic inch (oz/in3) to Grain per Milliliter (gr/mL) using the exact conversion factor (1 ounce per cubic inch = 26.69788804 grain per milliliter). See the formula, worked examples, and conversion table.
Ounce per Cubic inches to Grains per Milliliter 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 / 64.79891.
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 Milliliter
Ounce per Cubic inch and Grain per Milliliter 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 milliliter = ounce per cubic inches × 26.6978880414
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 milliliter equals 64.79891 base units, so dividing one by the other gives the direct ounce per cubic inch-to-grain per milliliter factor of 26.6978880414.
Simple example
1 oz/in3 × 26.69788804 = 26.69788804 gr/mL
1 ounce per cubic inch = 26.69788804 grains per milliliter.
Real-world example
1,000 oz/in3 × 26.69788804 = 26,697.88804 gr/mL
1,000 ounce per cubic inches = 26,697.88804 grains per milliliter.
Conversion table
| Ounce per Cubic inch (oz/in3) | Grain per Milliliter (gr/mL) |
|---|---|
| 0.1 oz/in3 | 2.669788804 gr/mL |
| 1 oz/in3 | 26.69788804 gr/mL |
| 10 oz/in3 | 266.9788804 gr/mL |
| 100 oz/in3 | 2,669.788804 gr/mL |
| 1,000 oz/in3 | 26,697.88804 gr/mL |
| 10,000 oz/in3 | 266,978.8804 gr/mL |
Reverse conversion: Grain per Milliliter to Ounce per Cubic inch
26.69788804 gr/mL × 0.03745614629 = 0.9999999999 oz/in3
26.69788804 grains per milliliter = 0.9999999999 ounce per cubic inches.
ounce per cubic inches = grains per milliliter × 0.0374561462857
For a page dedicated to this direction, see Grain per Milliliter to Ounce per Cubic inch.
Understanding the Ounce per Cubic inch (oz/in3)
Mass per volume density.
Understanding the Grain per Milliliter (gr/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per milliliter are in 1 ounce per cubic inch?
1 ounce per cubic inch equals 26.69788804 grains per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic inch to grain per milliliter?
Multiply the ounce per cubic inch value by 26.69788804. The converter above does this instantly to whatever precision you set.
How do I convert grain per milliliter back to ounce per cubic inch?
Use the reverse factor: 1 grain per milliliter equals 0.0374561463 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 milliliter?
Grain per Milliliter (gr/mL) is a unit of density.
Is the ounce per cubic inch to grain per milliliter conversion exact?
Yes. Both ounce per cubic inch and grain per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 26.69788804 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.