Mass per volume density.
Troy ounces per Imperial gallon to Grains per Gallon Converter — oz t/imp gal to gr/gal
Convert Troy ounce per Imperial gallon (oz t/imp gal) to Grain per Gallon (gr/gal) using the exact conversion factor (1 troy ounce per imperial gallon = 399.6836086 grain per gallon). See the formula, worked examples, and conversion table.
Troy 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 6.841808411 / 0.01711806105.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Troy ounces per Imperial gallon to Grains per Gallon
Troy 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 = troy ounces per imperial gallon × 399.683608622
This factor comes from each unit's defined relationship to the category's base unit: 1 troy ounce per imperial gallon equals 6.84180841118 base units, and 1 grain per gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct troy ounce per imperial gallon-to-grain per gallon factor of 399.683608622.
Simple example
1 oz t/imp gal × 399.6836086 = 399.6836086 gr/gal
1 troy ounce per imperial gallon = 399.6836086 grains per gallon.
Real-world example
1,000 oz t/imp gal × 399.6836086 = 399,683.6086 gr/gal
1,000 troy ounces per imperial gallon = 399,683.6086 grains per gallon.
Conversion table
| Troy ounce per Imperial gallon (oz t/imp gal) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 oz t/imp gal | 39.96836086 gr/gal |
| 1 oz t/imp gal | 399.6836086 gr/gal |
| 10 oz t/imp gal | 3,996.836086 gr/gal |
| 100 oz t/imp gal | 39,968.36086 gr/gal |
| 1,000 oz t/imp gal | 399,683.6086 gr/gal |
| 10,000 oz t/imp gal | 3,996,836.086 gr/gal |
Reverse conversion: Grain per Gallon to Troy ounce per Imperial gallon
399.6836086 gr/gal × 0.002501979011 = 0.9999999999 oz t/imp gal
399.6836086 grains per gallon = 0.9999999999 troy ounces per imperial gallon.
troy ounces per imperial gallon = grains per gallon × 0.00250197901147
For a page dedicated to this direction, see Grain per Gallon to Troy ounce per Imperial gallon.
Understanding the Troy ounce per Imperial gallon (oz t/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 troy ounce per imperial gallon?
1 troy ounce per imperial gallon equals 399.6836086 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert troy ounce per imperial gallon to grain per gallon?
Multiply the troy ounce per imperial gallon value by 399.6836086. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to troy ounce per imperial gallon?
Use the reverse factor: 1 grain per gallon equals 0.002501979 troy ounces per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a troy ounce per imperial gallon?
Troy ounce per Imperial gallon (oz t/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 troy ounce per imperial gallon to grain per gallon conversion exact?
Yes. Both troy ounce per imperial gallon and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 399.6836086 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.