Mass per volume density.
Grams per Gallon to Grains per Imperial gallon Converter — g/gal to gr/imp gal
Convert Gram per Gallon (g/gal) to Grain per Imperial gallon (gr/imp gal) using the exact conversion factor (1 gram per gallon = 18.53348961 grain per imperial gallon). See the formula, worked examples, and conversion table.
Grams per Gallon 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 0.2641720524 / 0.01425376752.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Gallon to Grains per Imperial gallon
Gram per Gallon 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 = grams per gallon × 18.5334896143
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per gallon equals 0.264172052358 base units, and 1 grain per imperial gallon equals 0.0142537675233 base units, so dividing one by the other gives the direct gram per gallon-to-grain per imperial gallon factor of 18.5334896143.
Simple example
1 g/gal × 18.53348961 = 18.53348961 gr/imp gal
1 gram per gallon = 18.53348961 grains per imperial gallon.
Real-world example
1,000 g/gal × 18.53348961 = 18,533.48961 gr/imp gal
1,000 grams per gallon = 18,533.48961 grains per imperial gallon.
Conversion table
| Gram per Gallon (g/gal) | Grain per Imperial gallon (gr/imp gal) |
|---|---|
| 0.1 g/gal | 1.853348961 gr/imp gal |
| 1 g/gal | 18.53348961 gr/imp gal |
| 10 g/gal | 185.3348961 gr/imp gal |
| 100 g/gal | 1,853.348961 gr/imp gal |
| 1,000 g/gal | 18,533.48961 gr/imp gal |
| 10,000 g/gal | 185,334.8961 gr/imp gal |
Reverse conversion: Grain per Imperial gallon to Gram per Gallon
18.53348961 gr/imp gal × 0.05395637955 = 0.9999999998 g/gal
18.53348961 grains per imperial gallon = 0.9999999998 grams per gallon.
grams per gallon = grains per imperial gallon × 0.0539563795491
For a page dedicated to this direction, see Grain per Imperial gallon to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
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 gram per gallon?
1 gram per gallon equals 18.53348961 grains per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to grain per imperial gallon?
Multiply the gram per gallon value by 18.53348961. The converter above does this instantly to whatever precision you set.
How do I convert grain per imperial gallon back to gram per gallon?
Use the reverse factor: 1 grain per imperial gallon equals 0.0539563796 grams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per gallon?
Gram per Gallon (g/gal) 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 gram per gallon to grain per imperial gallon conversion exact?
Yes. Both gram per gallon and grain per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 18.53348961 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.