Mass per volume density.
Pounds per Quart to Pounds per Imperial gallon Converter — lb/qt to lb/imp gal
Convert Pound per Quart (lb/qt) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 pound per quart = 4.803799702 pound per imperial gallon). See the formula, worked examples, and conversion table.
Pounds per Quart to Pounds 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 479.3057093 / 99.77637266.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Quart to Pounds per Imperial gallon
Pound per Quart and Pound 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
pounds per imperial gallon = pounds per quart × 4.80379970202
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 pound per imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct pound per quart-to-pound per imperial gallon factor of 4.80379970202.
Simple example
1 lb/qt × 4.803799702 = 4.803799702 lb/imp gal
1 pound per quart = 4.803799702 pounds per imperial gallon.
Real-world example
1,000 lb/qt × 4.803799702 = 4,803.799702 lb/imp gal
1,000 pounds per quart = 4,803.799702 pounds per imperial gallon.
Conversion table
| Pound per Quart (lb/qt) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 lb/qt | 0.4803799702 lb/imp gal |
| 1 lb/qt | 4.803799702 lb/imp gal |
| 10 lb/qt | 48.03799702 lb/imp gal |
| 100 lb/qt | 480.3799702 lb/imp gal |
| 1,000 lb/qt | 4,803.799702 lb/imp gal |
| 10,000 lb/qt | 48,037.99702 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Pound per Quart
4.803799702 lb/imp gal × 0.2081685462 = 1 lb/qt
4.803799702 pounds per imperial gallon = 1 pounds per quart.
pounds per quart = pounds per imperial gallon × 0.208168546157
For a page dedicated to this direction, see Pound per Imperial gallon to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per imperial gallon are in 1 pound per quart?
1 pound per quart equals 4.803799702 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to pound per imperial gallon?
Multiply the pound per quart value by 4.803799702. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to pound per quart?
Use the reverse factor: 1 pound per imperial gallon equals 0.2081685462 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
Is the pound per quart to pound per imperial gallon conversion exact?
Yes. Both pound per quart and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 4.803799702 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.