Mass per volume density.
Ounces per Imperial gallon to Grains per Gallon Converter — oz/imp gal to gr/gal
Convert Ounce per Imperial gallon (oz/imp gal) to Grain per Gallon (gr/gal) using the exact conversion factor (1 ounce per imperial gallon = 364.2949558 grain per gallon). See the formula, worked examples, and conversion table.
Ounces per Imperial gallon to Grains per 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 6.236023291 / 0.01711806105.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Imperial gallon to Grains per Gallon
Ounce per Imperial gallon and Grain per 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 gallon = ounces per imperial gallon × 364.294955775
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per imperial gallon equals 6.23602329144 base units, and 1 grain per gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct ounce per imperial gallon-to-grain per gallon factor of 364.294955775.
Simple example
1 oz/imp gal × 364.2949558 = 364.2949558 gr/gal
1 ounce per imperial gallon = 364.2949558 grains per gallon.
Real-world example
1,000 oz/imp gal × 364.2949558 = 364,294.9558 gr/gal
1,000 ounces per imperial gallon = 364,294.9558 grains per gallon.
Conversion table
| Ounce per Imperial gallon (oz/imp gal) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 oz/imp gal | 36.42949558 gr/gal |
| 1 oz/imp gal | 364.2949558 gr/gal |
| 10 oz/imp gal | 3,642.949558 gr/gal |
| 100 oz/imp gal | 36,429.49558 gr/gal |
| 1,000 oz/imp gal | 364,294.9558 gr/gal |
| 10,000 oz/imp gal | 3,642,949.558 gr/gal |
Reverse conversion: Grain per Gallon to Ounce per Imperial gallon
364.2949558 gr/gal × 0.002745028401 = 1 oz/imp gal
364.2949558 grains per gallon = 1 ounces per imperial gallon.
ounces per imperial gallon = grains per gallon × 0.00274502840115
For a page dedicated to this direction, see Grain per Gallon to Ounce per Imperial gallon.
Understanding the Ounce per Imperial gallon (oz/imp gal)
Mass per volume density.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per gallon are in 1 ounce per imperial gallon?
1 ounce per imperial gallon equals 364.2949558 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per imperial gallon to grain per gallon?
Multiply the ounce per imperial gallon value by 364.2949558. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to ounce per imperial gallon?
Use the reverse factor: 1 grain per gallon equals 0.0027450284 ounces per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per imperial gallon?
Ounce per Imperial gallon (oz/imp gal) is a unit of density.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
Is the ounce per imperial gallon to grain per gallon conversion exact?
Yes. Both ounce per imperial gallon and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 364.2949558 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.