Mass per volume density.
Pounds per Gallon to Ounces per Quart Converter — lb/gal to oz/qt
Convert Pound per Gallon (lb/gal) to Ounce per Quart (oz/qt) using the exact conversion factor (1 pound per gallon = 4 ounce per quart). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Ounces per Quart 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 / 29.95660683.
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 Ounces per Quart
Pound per Gallon and Ounce per Quart 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
ounces per quart = pounds per gallon × 4
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 ounce per quart equals 29.9566068292 base units, so dividing one by the other gives the direct pound per gallon-to-ounce per quart factor of 4.
Simple example
1 lb/gal × 4 = 4 oz/qt
1 pound per gallon = 4 ounces per quart.
Real-world example
1,000 lb/gal × 4 = 4,000 oz/qt
1,000 pounds per gallon = 4,000 ounces per quart.
Conversion table
| Pound per Gallon (lb/gal) | Ounce per Quart (oz/qt) |
|---|---|
| 0.1 lb/gal | 0.4 oz/qt |
| 1 lb/gal | 4 oz/qt |
| 10 lb/gal | 40 oz/qt |
| 100 lb/gal | 400 oz/qt |
| 1,000 lb/gal | 4,000 oz/qt |
| 10,000 lb/gal | 40,000 oz/qt |
Reverse conversion: Ounce per Quart to Pound per Gallon
4 oz/qt × 0.25 = 1 lb/gal
4 ounces per quart = 1 pound per gallon.
pounds per gallon = ounces per quart × 0.25
For a page dedicated to this direction, see Ounce per Quart 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 Ounce per Quart (oz/qt)
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 ounces per quart are in 1 pound per gallon?
1 pound per gallon equals 4 ounces per quart, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to ounce per quart?
Multiply the pound per gallon value by 4. The converter above does this instantly to whatever precision you set.
How do I convert ounce per quart back to pound per gallon?
Use the reverse factor: 1 ounce per quart equals 0.25 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 ounce per quart?
Ounce per Quart (oz/qt) is a unit of density.
Is the pound per gallon to ounce per quart conversion exact?
Yes. Both pound per gallon and ounce per quart are defined by fixed standards rather than physical artifacts, so the factor of 4 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)