Mass per volume density.
Pounds per Gallon to Milligrams per Quart Converter — lb/gal to mg/qt
Convert Pound per Gallon (lb/gal) to Milligram per Quart (mg/qt) using the exact conversion factor (1 pound per gallon = 113,398.0925 milligram per quart). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Milligrams 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 / 0.001056688209.
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 Milligrams per Quart
Pound per Gallon and Milligram 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
milligrams per quart = pounds per gallon × 113398.0925
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 milligram per quart equals 0.00105668820943 base units, so dividing one by the other gives the direct pound per gallon-to-milligram per quart factor of 113398.0925.
Simple example
1 lb/gal × 113398.0925 = 113,398.0925 mg/qt
1 pound per gallon = 113,398.0925 milligrams per quart.
Real-world example
1,000 lb/gal × 113398.0925 = 113,398,092.5 mg/qt
1,000 pounds per gallon = 113,398,092.5 milligrams per quart.
Conversion table
| Pound per Gallon (lb/gal) | Milligram per Quart (mg/qt) |
|---|---|
| 0.1 lb/gal | 11,339.80925 mg/qt |
| 1 lb/gal | 113,398.0925 mg/qt |
| 10 lb/gal | 1,133,980.925 mg/qt |
| 100 lb/gal | 11,339,809.25 mg/qt |
| 1,000 lb/gal | 113,398,092.5 mg/qt |
| 10,000 lb/gal | 1,133,980,925 mg/qt |
Reverse conversion: Milligram per Quart to Pound per Gallon
1 mg/qt × 0.000008818490487 = 0.0000088185 lb/gal
1 milligram per quart = 0.0000088185 pounds per gallon.
pounds per gallon = milligrams per quart × 0.0000088184904874
For a page dedicated to this direction, see Milligram 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 Milligram per Quart (mg/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 milligrams per quart are in 1 pound per gallon?
1 pound per gallon equals 113,398.0925 milligrams per quart, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to milligram per quart?
Multiply the pound per gallon value by 113398.0925. The converter above does this instantly to whatever precision you set.
How do I convert milligram per quart back to pound per gallon?
Use the reverse factor: 1 milligram per quart equals 0.0000088185 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 milligram per quart?
Milligram per Quart (mg/qt) is a unit of density.
Is the pound per gallon to milligram per quart conversion exact?
Yes. Both pound per gallon and milligram per quart are defined by fixed standards rather than physical artifacts, so the factor of 113398.0925 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)