Mass per volume density.
Ounces per Imperial gallon to Pounds per Gallon Converter — oz/imp gal to lb/gal
Convert Ounce per Imperial gallon (oz/imp gal) to Pound per Gallon (lb/gal) using the exact conversion factor (1 ounce per imperial gallon = 0.0520421365 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Ounces per Imperial gallon to Pounds 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 6.236023291 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Imperial gallon to Pounds per Gallon
Ounce per Imperial gallon and Pound 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
pounds per gallon = ounces per imperial gallon × 0.0520421365393
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per imperial gallon equals 6.23602329144 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct ounce per imperial gallon-to-pound per gallon factor of 0.0520421365393.
Simple example
1 oz/imp gal × 0.05204213654 = 0.0520421365 lb/gal
1 ounce per imperial gallon = 0.0520421365 pounds per gallon.
Real-world example
1,000 oz/imp gal × 0.05204213654 = 52.04213654 lb/gal
1,000 ounces per imperial gallon = 52.04213654 pounds per gallon.
Conversion table
| Ounce per Imperial gallon (oz/imp gal) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 oz/imp gal | 0.0052042137 lb/gal |
| 1 oz/imp gal | 0.0520421365 lb/gal |
| 10 oz/imp gal | 0.5204213654 lb/gal |
| 100 oz/imp gal | 5.204213654 lb/gal |
| 1,000 oz/imp gal | 52.04213654 lb/gal |
| 10,000 oz/imp gal | 520.4213654 lb/gal |
Reverse conversion: Pound per Gallon to Ounce per Imperial gallon
0.0520421365 lb/gal × 19.21519881 = 0.9999999992 oz/imp gal
0.0520421365 pounds per gallon = 0.9999999992 ounces per imperial gallon.
ounces per imperial gallon = pounds per gallon × 19.2151988081
For a page dedicated to this direction, see Pound per Gallon to Ounce per Imperial gallon.
Understanding the Ounce per Imperial gallon (oz/imp gal)
Mass per volume density.
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
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 pounds per gallon are in 1 ounce per imperial gallon?
1 ounce per imperial gallon equals 0.0520421365 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per imperial gallon to pound per gallon?
Multiply the ounce per imperial gallon value by 0.05204213654. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to ounce per imperial gallon?
Use the reverse factor: 1 pound per gallon equals 19.21519881 ounces per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per imperial gallon?
Ounce per Imperial gallon (oz/imp gal) is a unit of density.
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.
Is the ounce per imperial gallon to pound per gallon conversion exact?
Yes. Both ounce per imperial gallon and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.05204213654 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.