Mass per volume density.
Ounce per Cubic inches to Grains per Imperial gallon Converter — oz/in3 to gr/imp gal
Convert Ounce per Cubic inch (oz/in3) to Grain per Imperial gallon (gr/imp gal) using the exact conversion factor (1 ounce per cubic inch = 121,371.0018 grain per imperial gallon). See the formula, worked examples, and conversion table.
Ounce per Cubic inches to Grains 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 1729.994044 / 0.01425376752.
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 Imperial gallon
Ounce per Cubic inch and Grain 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
grains per imperial gallon = ounce per cubic inches × 121371.001846
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 imperial gallon equals 0.0142537675233 base units, so dividing one by the other gives the direct ounce per cubic inch-to-grain per imperial gallon factor of 121371.001846.
Simple example
1 oz/in3 × 121371.0018 = 121,371.0018 gr/imp gal
1 ounce per cubic inch = 121,371.0018 grains per imperial gallon.
Real-world example
1,000 oz/in3 × 121371.0018 = 121,371,001.8 gr/imp gal
1,000 ounce per cubic inches = 121,371,001.8 grains per imperial gallon.
Conversion table
| Ounce per Cubic inch (oz/in3) | Grain per Imperial gallon (gr/imp gal) |
|---|---|
| 0.1 oz/in3 | 12,137.10018 gr/imp gal |
| 1 oz/in3 | 121,371.0018 gr/imp gal |
| 10 oz/in3 | 1,213,710.018 gr/imp gal |
| 100 oz/in3 | 12,137,100.18 gr/imp gal |
| 1,000 oz/in3 | 121,371,001.8 gr/imp gal |
| 10,000 oz/in3 | 1,213,710,018 gr/imp gal |
Reverse conversion: Grain per Imperial gallon to Ounce per Cubic inch
1 gr/imp gal × 0.000008239200343 = 0.0000082392 oz/in3
1 grain per imperial gallon = 0.0000082392 ounce per cubic inches.
ounce per cubic inches = grains per imperial gallon × 0.00000823920034265
For a page dedicated to this direction, see Grain per Imperial gallon to Ounce per Cubic inch.
Understanding the Ounce per Cubic inch (oz/in3)
Mass per volume density.
Understanding the Grain per Imperial gallon (gr/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per imperial gallon are in 1 ounce per cubic inch?
1 ounce per cubic inch equals 121,371.0018 grains per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic inch to grain per imperial gallon?
Multiply the ounce per cubic inch value by 121371.0018. The converter above does this instantly to whatever precision you set.
How do I convert grain per imperial gallon back to ounce per cubic inch?
Use the reverse factor: 1 grain per imperial gallon equals 0.0000082392 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 imperial gallon?
Grain per Imperial gallon (gr/imp gal) is a unit of density.
Is the ounce per cubic inch to grain per imperial gallon conversion exact?
Yes. Both ounce per cubic inch and grain per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 121371.0018 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.