Mass per volume density.
Pounds per Imperial gallon to Drams per Imperial gallon Converter — lb/imp gal to dr/imp gal
Convert Pound per Imperial gallon (lb/imp gal) to Dram per Imperial gallon (dr/imp gal) using the exact conversion factor (1 pound per imperial gallon = 256 dram per imperial gallon). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Drams 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 99.77637266 / 0.3897514557.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Imperial gallon to Drams per Imperial gallon
Pound per Imperial gallon and Dram 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
drams per imperial gallon = pounds per imperial gallon × 256
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per imperial gallon equals 99.7763726631 base units, and 1 dram per imperial gallon equals 0.389751455715 base units, so dividing one by the other gives the direct pound per imperial gallon-to-dram per imperial gallon factor of 256.
Simple example
1 lb/imp gal × 256 = 256 dr/imp gal
1 pound per imperial gallon = 256 drams per imperial gallon.
Real-world example
1,000 lb/imp gal × 256 = 256,000 dr/imp gal
1,000 pounds per imperial gallon = 256,000 drams per imperial gallon.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Dram per Imperial gallon (dr/imp gal) |
|---|---|
| 0.1 lb/imp gal | 25.6 dr/imp gal |
| 1 lb/imp gal | 256 dr/imp gal |
| 10 lb/imp gal | 2,560 dr/imp gal |
| 100 lb/imp gal | 25,600 dr/imp gal |
| 1,000 lb/imp gal | 256,000 dr/imp gal |
| 10,000 lb/imp gal | 2,560,000 dr/imp gal |
Reverse conversion: Dram per Imperial gallon to Pound per Imperial gallon
256 dr/imp gal × 0.00390625 = 1 lb/imp gal
256 drams per imperial gallon = 1 pound per imperial gallon.
pounds per imperial gallon = drams per imperial gallon × 0.00390625
For a page dedicated to this direction, see Dram per Imperial gallon to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Dram per Imperial gallon (dr/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per imperial gallon are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 256 drams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to dram per imperial gallon?
Multiply the pound per imperial gallon value by 256. The converter above does this instantly to whatever precision you set.
How do I convert dram per imperial gallon back to pound per imperial gallon?
Use the reverse factor: 1 dram per imperial gallon equals 0.00390625 pounds per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
What is a dram per imperial gallon?
Dram per Imperial gallon (dr/imp gal) is a unit of density.
Is the pound per imperial gallon to dram per imperial gallon conversion exact?
Yes. Both pound per imperial gallon and dram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 256 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.