Mass per volume density.
Grams per Gallon to Grains per Fluid ounce Converter — g/gal to gr/fl oz
Convert Gram per Gallon (g/gal) to Grain per Fluid ounce (gr/fl oz) using the exact conversion factor (1 gram per gallon = 0.1205652996 grain per fluid ounce). See the formula, worked examples, and conversion table.
Grams per Gallon to Grains per Fluid ounce 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 / 2.191111814.
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 Fluid ounce
Gram per Gallon and Grain per Fluid ounce 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 fluid ounce = grams per gallon × 0.120565299632
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 fluid ounce equals 2.19111181379 base units, so dividing one by the other gives the direct gram per gallon-to-grain per fluid ounce factor of 0.120565299632.
Simple example
1 g/gal × 0.1205652996 = 0.1205652996 gr/fl oz
1 gram per gallon = 0.1205652996 grains per fluid ounce.
Real-world example
1,000 g/gal × 0.1205652996 = 120.5652996 gr/fl oz
1,000 grams per gallon = 120.5652996 grains per fluid ounce.
Conversion table
| Gram per Gallon (g/gal) | Grain per Fluid ounce (gr/fl oz) |
|---|---|
| 0.1 g/gal | 0.01205653 gr/fl oz |
| 1 g/gal | 0.1205652996 gr/fl oz |
| 10 g/gal | 1.205652996 gr/fl oz |
| 100 g/gal | 12.05652996 gr/fl oz |
| 1,000 g/gal | 120.5652996 gr/fl oz |
| 10,000 g/gal | 1,205.652996 gr/fl oz |
Reverse conversion: Grain per Fluid ounce to Gram per Gallon
0.1205652996 gr/fl oz × 8.29426048 = 0.9999999997 g/gal
0.1205652996 grains per fluid ounce = 0.9999999997 grams per gallon.
grams per gallon = grains per fluid ounce × 8.29426048
For a page dedicated to this direction, see Grain per Fluid ounce to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
Mass per volume density.
Understanding the Grain per Fluid ounce (gr/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per fluid ounce are in 1 gram per gallon?
1 gram per gallon equals 0.1205652996 grains per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to grain per fluid ounce?
Multiply the gram per gallon value by 0.1205652996. The converter above does this instantly to whatever precision you set.
How do I convert grain per fluid ounce back to gram per gallon?
Use the reverse factor: 1 grain per fluid ounce equals 8.29426048 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 fluid ounce?
Grain per Fluid ounce (gr/fl oz) is a unit of density.
Is the gram per gallon to grain per fluid ounce conversion exact?
Yes. Both gram per gallon and grain per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.1205652996 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.