Mass per volume density.
Pounds per Quart to Hectograms per Gallon Converter — lb/qt to hg/gal
Convert Pound per Quart (lb/qt) to Hectogram per Gallon (hg/gal) using the exact conversion factor (1 pound per quart = 18.1436948 hectogram per gallon). See the formula, worked examples, and conversion table.
Pounds per Quart to Hectograms 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 479.3057093 / 26.41720524.
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 Hectograms per Gallon
Pound per Quart and Hectogram 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
hectograms per gallon = pounds per quart × 18.1436948
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 hectogram per gallon equals 26.4172052358 base units, so dividing one by the other gives the direct pound per quart-to-hectogram per gallon factor of 18.1436948.
Simple example
1 lb/qt × 18.1436948 = 18.1436948 hg/gal
1 pound per quart = 18.1436948 hectograms per gallon.
Real-world example
1,000 lb/qt × 18.1436948 = 18,143.6948 hg/gal
1,000 pounds per quart = 18,143.6948 hectograms per gallon.
Conversion table
| Pound per Quart (lb/qt) | Hectogram per Gallon (hg/gal) |
|---|---|
| 0.1 lb/qt | 1.81436948 hg/gal |
| 1 lb/qt | 18.1436948 hg/gal |
| 10 lb/qt | 181.436948 hg/gal |
| 100 lb/qt | 1,814.36948 hg/gal |
| 1,000 lb/qt | 18,143.6948 hg/gal |
| 10,000 lb/qt | 181,436.948 hg/gal |
Reverse conversion: Hectogram per Gallon to Pound per Quart
18.1436948 hg/gal × 0.05511556555 = 1 lb/qt
18.1436948 hectograms per gallon = 1 pounds per quart.
pounds per quart = hectograms per gallon × 0.0551155655462
For a page dedicated to this direction, see Hectogram per Gallon to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per gallon are in 1 pound per quart?
1 pound per quart equals 18.1436948 hectograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to hectogram per gallon?
Multiply the pound per quart value by 18.1436948. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per gallon back to pound per quart?
Use the reverse factor: 1 hectogram per gallon equals 0.0551155656 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 hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
Is the pound per quart to hectogram per gallon conversion exact?
Yes. Both pound per quart and hectogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 18.1436948 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.