Mass per volume density.
Drams per Gallon to Grains per Fluid ounce Converter — dr/gal to gr/fl oz
Convert Dram per Gallon (dr/gal) to Grain per Fluid ounce (gr/fl oz) using the exact conversion factor (1 dram per gallon = 0.2136230469 grain per fluid ounce). See the formula, worked examples, and conversion table.
Drams 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 0.4680719817 / 2.191111814.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Gallon to Grains per Fluid ounce
Dram 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 = drams per gallon × 0.213623046875
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per gallon equals 0.468071981707 base units, and 1 grain per fluid ounce equals 2.19111181379 base units, so dividing one by the other gives the direct dram per gallon-to-grain per fluid ounce factor of 0.213623046875.
Simple example
1 dr/gal × 0.2136230469 = 0.2136230469 gr/fl oz
1 dram per gallon = 0.2136230469 grains per fluid ounce.
Real-world example
1,000 dr/gal × 0.2136230469 = 213.6230469 gr/fl oz
1,000 drams per gallon = 213.6230469 grains per fluid ounce.
Conversion table
| Dram per Gallon (dr/gal) | Grain per Fluid ounce (gr/fl oz) |
|---|---|
| 0.1 dr/gal | 0.0213623047 gr/fl oz |
| 1 dr/gal | 0.2136230469 gr/fl oz |
| 10 dr/gal | 2.136230469 gr/fl oz |
| 100 dr/gal | 21.36230469 gr/fl oz |
| 1,000 dr/gal | 213.6230469 gr/fl oz |
| 10,000 dr/gal | 2,136.230469 gr/fl oz |
Reverse conversion: Grain per Fluid ounce to Dram per Gallon
0.2136230469 gr/fl oz × 4.681142857 = 1 dr/gal
0.2136230469 grains per fluid ounce = 1 drams per gallon.
drams per gallon = grains per fluid ounce × 4.68114285714
For a page dedicated to this direction, see Grain per Fluid ounce to Dram per Gallon.
Understanding the Dram per Gallon (dr/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 dram per gallon?
1 dram per gallon equals 0.2136230469 grains per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert dram per gallon to grain per fluid ounce?
Multiply the dram per gallon value by 0.2136230469. The converter above does this instantly to whatever precision you set.
How do I convert grain per fluid ounce back to dram per gallon?
Use the reverse factor: 1 grain per fluid ounce equals 4.681142857 drams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per gallon?
Dram per Gallon (dr/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 dram per gallon to grain per fluid ounce conversion exact?
Yes. Both dram per gallon and grain per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.2136230469 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.