Mass per volume density.
Milligrams per Quart to Micrograms per Liter Converter — mg/qt to ug/L
Convert Milligram per Quart (mg/qt) to Microgram per Liter (ug/L) using the exact conversion factor (1 milligram per quart = 1,056.688209 microgram per liter). See the formula, worked examples, and conversion table.
Milligrams per Quart to Micrograms per Liter 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 0.001056688209 / 1e-6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Quart to Micrograms per Liter
Milligram per Quart and Microgram per Liter 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
micrograms per liter = milligrams per quart × 1056.68820943
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per quart equals 0.00105668820943 base units, and 1 microgram per liter equals 0.000001 base units, so dividing one by the other gives the direct milligram per quart-to-microgram per liter factor of 1056.68820943.
Simple example
1 mg/qt × 1056.688209 = 1,056.688209 ug/L
1 milligram per quart = 1,056.688209 micrograms per liter.
Real-world example
1,000 mg/qt × 1056.688209 = 1,056,688.209 ug/L
1,000 milligrams per quart = 1,056,688.209 micrograms per liter.
Conversion table
| Milligram per Quart (mg/qt) | Microgram per Liter (ug/L) |
|---|---|
| 0.1 mg/qt | 105.6688209 ug/L |
| 1 mg/qt | 1,056.688209 ug/L |
| 10 mg/qt | 10,566.88209 ug/L |
| 100 mg/qt | 105,668.8209 ug/L |
| 1,000 mg/qt | 1,056,688.209 ug/L |
| 10,000 mg/qt | 10,566,882.09 ug/L |
Reverse conversion: Microgram per Liter to Milligram per Quart
1 ug/L × 0.000946352946 = 0.0009463529 mg/qt
1 microgram per liter = 0.0009463529 milligrams per quart.
milligrams per quart = micrograms per liter × 0.000946352946
For a page dedicated to this direction, see Microgram per Liter to Milligram per Quart.
Understanding the Milligram per Quart (mg/qt)
Mass per volume density.
Understanding the Microgram per Liter (ug/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms per liter are in 1 milligram per quart?
1 milligram per quart equals 1,056.688209 micrograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per quart to microgram per liter?
Multiply the milligram per quart value by 1056.688209. The converter above does this instantly to whatever precision you set.
How do I convert microgram per liter back to milligram per quart?
Use the reverse factor: 1 microgram per liter equals 0.0009463529 milligrams per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per quart?
Milligram per Quart (mg/qt) is a unit of density.
What is a microgram per liter?
Microgram per Liter (ug/L) is a unit of density.
Is the milligram per quart to microgram per liter conversion exact?
Yes. Both milligram per quart and microgram per liter are defined by fixed standards rather than physical artifacts, so the factor of 1056.688209 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.