Mass per volume density.
Grams per Gallon to Grain per Cubic inches Converter — g/gal to gr/in3
Convert Gram per Gallon (g/gal) to Grain per Cubic inch (gr/in3) using the exact conversion factor (1 gram per gallon = 0.0668067461 grain per cubic inch). See the formula, worked examples, and conversion table.
Grams per Gallon to Grain per Cubic inches 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 / 3.954272101.
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 Grain per Cubic inches
Gram per Gallon and Grain per Cubic inch 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
grain per cubic inches = grams per gallon × 0.0668067461166
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 cubic inch equals 3.95427210146 base units, so dividing one by the other gives the direct gram per gallon-to-grain per cubic inch factor of 0.0668067461166.
Simple example
1 g/gal × 0.06680674612 = 0.0668067461 gr/in3
1 gram per gallon = 0.0668067461 grain per cubic inches.
Real-world example
1,000 g/gal × 0.06680674612 = 66.80674612 gr/in3
1,000 grams per gallon = 66.80674612 grain per cubic inches.
Conversion table
| Gram per Gallon (g/gal) | Grain per Cubic inch (gr/in3) |
|---|---|
| 0.1 g/gal | 0.0066806746 gr/in3 |
| 1 g/gal | 0.0668067461 gr/in3 |
| 10 g/gal | 0.6680674612 gr/in3 |
| 100 g/gal | 6.680674612 gr/in3 |
| 1,000 g/gal | 66.80674612 gr/in3 |
| 10,000 g/gal | 668.0674612 gr/in3 |
Reverse conversion: Grain per Cubic inch to Gram per Gallon
0.0668067461 gr/in3 × 14.96854821 = 0.9999999998 g/gal
0.0668067461 grain per cubic inches = 0.9999999998 grams per gallon.
grams per gallon = grain per cubic inches × 14.96854821
For a page dedicated to this direction, see Grain per Cubic inch to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
Mass per volume density.
Understanding the Grain per Cubic inch (gr/in3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grain per cubic inches are in 1 gram per gallon?
1 gram per gallon equals 0.0668067461 grain per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to grain per cubic inch?
Multiply the gram per gallon value by 0.06680674612. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic inch back to gram per gallon?
Use the reverse factor: 1 grain per cubic inch equals 14.96854821 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 cubic inch?
Grain per Cubic inch (gr/in3) is a unit of density.
Is the gram per gallon to grain per cubic inch conversion exact?
Yes. Both gram per gallon and grain per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 0.06680674612 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.