Mass per volume density.
Ounces per Quart to Milligrams per Gallon Converter — oz/qt to mg/gal
Convert Ounce per Quart (oz/qt) to Milligram per Gallon (mg/gal) using the exact conversion factor (1 ounce per quart = 113,398.0925 milligram per gallon). See the formula, worked examples, and conversion table.
Ounces per Quart to Milligrams 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 29.95660683 / 0.0002641720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Quart to Milligrams per Gallon
Ounce per Quart and Milligram 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
milligrams per gallon = ounces per quart × 113398.0925
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per quart equals 29.9566068292 base units, and 1 milligram per gallon equals 0.000264172052358 base units, so dividing one by the other gives the direct ounce per quart-to-milligram per gallon factor of 113398.0925.
Simple example
1 oz/qt × 113398.0925 = 113,398.0925 mg/gal
1 ounce per quart = 113,398.0925 milligrams per gallon.
Real-world example
1,000 oz/qt × 113398.0925 = 113,398,092.5 mg/gal
1,000 ounces per quart = 113,398,092.5 milligrams per gallon.
Conversion table
| Ounce per Quart (oz/qt) | Milligram per Gallon (mg/gal) |
|---|---|
| 0.1 oz/qt | 11,339.80925 mg/gal |
| 1 oz/qt | 113,398.0925 mg/gal |
| 10 oz/qt | 1,133,980.925 mg/gal |
| 100 oz/qt | 11,339,809.25 mg/gal |
| 1,000 oz/qt | 113,398,092.5 mg/gal |
| 10,000 oz/qt | 1,133,980,925 mg/gal |
Reverse conversion: Milligram per Gallon to Ounce per Quart
1 mg/gal × 0.000008818490487 = 0.0000088185 oz/qt
1 milligram per gallon = 0.0000088185 ounces per quart.
ounces per quart = milligrams per gallon × 0.0000088184904874
For a page dedicated to this direction, see Milligram per Gallon to Ounce per Quart.
Understanding the Ounce per Quart (oz/qt)
Mass per volume density.
Understanding the Milligram per Gallon (mg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per gallon are in 1 ounce per quart?
1 ounce per quart equals 113,398.0925 milligrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per quart to milligram per gallon?
Multiply the ounce per quart value by 113398.0925. The converter above does this instantly to whatever precision you set.
How do I convert milligram per gallon back to ounce per quart?
Use the reverse factor: 1 milligram per gallon equals 0.0000088185 ounces per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per quart?
Ounce per Quart (oz/qt) is a unit of density.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of density.
Is the ounce per quart to milligram per gallon conversion exact?
Yes. Both ounce per quart and milligram per gallon 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'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.