Mass per volume density.
Pounds per Gallon to Drams per Imperial gallon Converter — lb/gal to dr/imp gal
Convert Pound per Gallon (lb/gal) to Dram per Imperial gallon (dr/imp gal) using the exact conversion factor (1 pound per gallon = 307.4431809 dram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per 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 119.8264273 / 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 Gallon to Drams per Imperial gallon
Pound per 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. Pound per Gallon is most often used for us paint and coatings density specifications.
Formula
drams per imperial gallon = pounds per gallon × 307.443180929
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per gallon equals 119.826427317 base units, and 1 dram per imperial gallon equals 0.389751455715 base units, so dividing one by the other gives the direct pound per gallon-to-dram per imperial gallon factor of 307.443180929.
Simple example
1 lb/gal × 307.4431809 = 307.4431809 dr/imp gal
1 pound per gallon = 307.4431809 drams per imperial gallon.
Real-world example
1,000 lb/gal × 307.4431809 = 307,443.1809 dr/imp gal
1,000 pounds per gallon = 307,443.1809 drams per imperial gallon.
Conversion table
| Pound per Gallon (lb/gal) | Dram per Imperial gallon (dr/imp gal) |
|---|---|
| 0.1 lb/gal | 30.74431809 dr/imp gal |
| 1 lb/gal | 307.4431809 dr/imp gal |
| 10 lb/gal | 3,074.431809 dr/imp gal |
| 100 lb/gal | 30,744.31809 dr/imp gal |
| 1,000 lb/gal | 307,443.1809 dr/imp gal |
| 10,000 lb/gal | 3,074,431.809 dr/imp gal |
Reverse conversion: Dram per Imperial gallon to Pound per Gallon
307.4431809 dr/imp gal × 0.003252633534 = 0.9999999999 lb/gal
307.4431809 drams per imperial gallon = 0.9999999999 pounds per gallon.
pounds per gallon = drams per imperial gallon × 0.00325263353371
For a page dedicated to this direction, see Dram per Imperial gallon to Pound per Gallon.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Understanding the Dram per Imperial gallon (dr/imp gal)
Mass per volume density.
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
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 gallon?
1 pound per gallon equals 307.4431809 drams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to dram per imperial gallon?
Multiply the pound per gallon value by 307.4431809. The converter above does this instantly to whatever precision you set.
How do I convert dram per imperial gallon back to pound per gallon?
Use the reverse factor: 1 dram per imperial gallon equals 0.0032526335 pounds per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
What is a dram per imperial gallon?
Dram per Imperial gallon (dr/imp gal) is a unit of density.
Is the pound per gallon to dram per imperial gallon conversion exact?
Yes. Both pound per gallon and dram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 307.4431809 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Where is the pound per gallon still used today?
United States (paint, fuel, and industrial liquid density specifications)