Mass per volume density.
Grains per Cup to Drams per Gallon Converter — gr/cup to dr/gal
Convert Grain per Cup (gr/cup) to Dram per Gallon (dr/gal) using the exact conversion factor (1 grain per cup = 0.5851428571 dram per gallon). See the formula, worked examples, and conversion table.
Grains per Cup to Drams per 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 0.2738889767 / 0.4680719817.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cup to Drams per Gallon
Grain per Cup and Dram per 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
drams per gallon = grains per cup × 0.585142857143
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cup equals 0.273888976724 base units, and 1 dram per gallon equals 0.468071981707 base units, so dividing one by the other gives the direct grain per cup-to-dram per gallon factor of 0.585142857143.
Simple example
1 gr/cup × 0.5851428571 = 0.5851428571 dr/gal
1 grain per cup = 0.5851428571 drams per gallon.
Real-world example
1,000 gr/cup × 0.5851428571 = 585.1428571 dr/gal
1,000 grains per cup = 585.1428571 drams per gallon.
Conversion table
| Grain per Cup (gr/cup) | Dram per Gallon (dr/gal) |
|---|---|
| 0.1 gr/cup | 0.0585142857 dr/gal |
| 1 gr/cup | 0.5851428571 dr/gal |
| 10 gr/cup | 5.851428571 dr/gal |
| 100 gr/cup | 58.51428571 dr/gal |
| 1,000 gr/cup | 585.1428571 dr/gal |
| 10,000 gr/cup | 5,851.428571 dr/gal |
Reverse conversion: Dram per Gallon to Grain per Cup
0.5851428571 dr/gal × 1.708984375 = 0.9999999999 gr/cup
0.5851428571 drams per gallon = 0.9999999999 grains per cup.
grains per cup = drams per gallon × 1.708984375
For a page dedicated to this direction, see Dram per Gallon to Grain per Cup.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Understanding the Dram per Gallon (dr/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per gallon are in 1 grain per cup?
1 grain per cup equals 0.5851428571 drams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cup to dram per gallon?
Multiply the grain per cup value by 0.5851428571. The converter above does this instantly to whatever precision you set.
How do I convert dram per gallon back to grain per cup?
Use the reverse factor: 1 dram per gallon equals 1.708984375 grains per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
What is a dram per gallon?
Dram per Gallon (dr/gal) is a unit of density.
Is the grain per cup to dram per gallon conversion exact?
Yes. Both grain per cup and dram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.5851428571 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.