Mass per volume density.
Drams per Milliliter to Troy ounces per Imperial gallon Converter — dr/mL to oz t/imp gal
Convert Dram per Milliliter (dr/mL) to Troy ounce per Imperial gallon (oz t/imp gal) using the exact conversion factor (1 dram per milliliter = 258.9732259 troy ounce per imperial gallon). See the formula, worked examples, and conversion table.
Drams per Milliliter to Troy ounces 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 1771.845195 / 6.841808411.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Milliliter to Troy ounces per Imperial gallon
Dram per Milliliter and Troy ounce 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
troy ounces per imperial gallon = drams per milliliter × 258.973225911
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per milliliter equals 1771.84519531 base units, and 1 troy ounce per imperial gallon equals 6.84180841118 base units, so dividing one by the other gives the direct dram per milliliter-to-troy ounce per imperial gallon factor of 258.973225911.
Simple example
1 dr/mL × 258.9732259 = 258.9732259 oz t/imp gal
1 dram per milliliter = 258.9732259 troy ounces per imperial gallon.
Real-world example
1,000 dr/mL × 258.9732259 = 258,973.2259 oz t/imp gal
1,000 drams per milliliter = 258,973.2259 troy ounces per imperial gallon.
Conversion table
| Dram per Milliliter (dr/mL) | Troy ounce per Imperial gallon (oz t/imp gal) |
|---|---|
| 0.1 dr/mL | 25.89732259 oz t/imp gal |
| 1 dr/mL | 258.9732259 oz t/imp gal |
| 10 dr/mL | 2,589.732259 oz t/imp gal |
| 100 dr/mL | 25,897.32259 oz t/imp gal |
| 1,000 dr/mL | 258,973.2259 oz t/imp gal |
| 10,000 dr/mL | 2,589,732.259 oz t/imp gal |
Reverse conversion: Troy ounce per Imperial gallon to Dram per Milliliter
258.9732259 oz t/imp gal × 0.003861403033 = 1 dr/mL
258.9732259 troy ounces per imperial gallon = 1 drams per milliliter.
drams per milliliter = troy ounces per imperial gallon × 0.003861403033
For a page dedicated to this direction, see Troy ounce per Imperial gallon to Dram per Milliliter.
Understanding the Dram per Milliliter (dr/mL)
Mass per volume density.
Understanding the Troy ounce per Imperial gallon (oz t/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many troy ounces per imperial gallon are in 1 dram per milliliter?
1 dram per milliliter equals 258.9732259 troy ounces per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert dram per milliliter to troy ounce per imperial gallon?
Multiply the dram per milliliter value by 258.9732259. The converter above does this instantly to whatever precision you set.
How do I convert troy ounce per imperial gallon back to dram per milliliter?
Use the reverse factor: 1 troy ounce per imperial gallon equals 0.003861403 drams per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per milliliter?
Dram per Milliliter (dr/mL) is a unit of density.
What is a troy ounce per imperial gallon?
Troy ounce per Imperial gallon (oz t/imp gal) is a unit of density.
Is the dram per milliliter to troy ounce per imperial gallon conversion exact?
Yes. Both dram per milliliter and troy ounce per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 258.9732259 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.