Mass per volume density.
Grams per Cup to Grains per Imperial gallon Converter — g/cup to gr/imp gal
Convert Gram per Cup (g/cup) to Grain per Imperial gallon (gr/imp gal) using the exact conversion factor (1 gram per cup = 296.5358338 grain per imperial gallon). See the formula, worked examples, and conversion table.
Grams per Cup 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 4.226752838 / 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 Cup to Grains per Imperial gallon
Gram per Cup 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 cup × 296.535833829
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cup equals 4.22675283773 base units, and 1 grain per imperial gallon equals 0.0142537675233 base units, so dividing one by the other gives the direct gram per cup-to-grain per imperial gallon factor of 296.535833829.
Simple example
1 g/cup × 296.5358338 = 296.5358338 gr/imp gal
1 gram per cup = 296.5358338 grains per imperial gallon.
Real-world example
1,000 g/cup × 296.5358338 = 296,535.8338 gr/imp gal
1,000 grams per cup = 296,535.8338 grains per imperial gallon.
Conversion table
| Gram per Cup (g/cup) | Grain per Imperial gallon (gr/imp gal) |
|---|---|
| 0.1 g/cup | 29.65358338 gr/imp gal |
| 1 g/cup | 296.5358338 gr/imp gal |
| 10 g/cup | 2,965.358338 gr/imp gal |
| 100 g/cup | 29,653.58338 gr/imp gal |
| 1,000 g/cup | 296,535.8338 gr/imp gal |
| 10,000 g/cup | 2,965,358.338 gr/imp gal |
Reverse conversion: Grain per Imperial gallon to Gram per Cup
296.5358338 gr/imp gal × 0.003372273722 = 0.9999999999 g/cup
296.5358338 grains per imperial gallon = 0.9999999999 grams per cup.
grams per cup = grains per imperial gallon × 0.00337227372182
For a page dedicated to this direction, see Grain per Imperial gallon to Gram per Cup.
Understanding the Gram per Cup (g/cup)
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 cup?
1 gram per cup equals 296.5358338 grains per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to grain per imperial gallon?
Multiply the gram per cup value by 296.5358338. The converter above does this instantly to whatever precision you set.
How do I convert grain per imperial gallon back to gram per cup?
Use the reverse factor: 1 grain per imperial gallon equals 0.0033722737 grams per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cup?
Gram per Cup (g/cup) 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 cup to grain per imperial gallon conversion exact?
Yes. Both gram per cup and grain per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 296.5358338 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.