Mass per volume density.
Pounds per Imperial gallon to Pounds per Quart Converter — lb/imp gal to lb/qt
Convert Pound per Imperial gallon (lb/imp gal) to Pound per Quart (lb/qt) using the exact conversion factor (1 pound per imperial gallon = 0.2081685462 pound per quart). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Pounds 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 99.77637266 / 479.3057093.
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 Pounds per Quart
Pound per Imperial gallon and Pound 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. Both are mass per volume density units.
Formula
pounds per quart = pounds per imperial gallon × 0.208168546157
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 pound per quart equals 479.305709268 base units, so dividing one by the other gives the direct pound per imperial gallon-to-pound per quart factor of 0.208168546157.
Simple example
1 lb/imp gal × 0.2081685462 = 0.2081685462 lb/qt
1 pound per imperial gallon = 0.2081685462 pounds per quart.
Real-world example
1,000 lb/imp gal × 0.2081685462 = 208.1685462 lb/qt
1,000 pounds per imperial gallon = 208.1685462 pounds per quart.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Pound per Quart (lb/qt) |
|---|---|
| 0.1 lb/imp gal | 0.0208168546 lb/qt |
| 1 lb/imp gal | 0.2081685462 lb/qt |
| 10 lb/imp gal | 2.081685462 lb/qt |
| 100 lb/imp gal | 20.81685462 lb/qt |
| 1,000 lb/imp gal | 208.1685462 lb/qt |
| 10,000 lb/imp gal | 2,081.685462 lb/qt |
Reverse conversion: Pound per Quart to Pound per Imperial gallon
0.2081685462 lb/qt × 4.803799702 = 1 lb/imp gal
0.2081685462 pounds per quart = 1 pounds per imperial gallon.
pounds per imperial gallon = pounds per quart × 4.80379970202
For a page dedicated to this direction, see Pound per Quart to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per quart are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 0.2081685462 pounds per quart, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to pound per quart?
Multiply the pound per imperial gallon value by 0.2081685462. The converter above does this instantly to whatever precision you set.
How do I convert pound per quart back to pound per imperial gallon?
Use the reverse factor: 1 pound per quart equals 4.803799702 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 pound per quart?
Pound per Quart (lb/qt) is a unit of density.
Is the pound per imperial gallon to pound per quart conversion exact?
Yes. Both pound per imperial gallon and pound per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.2081685462 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.