Mass per volume density.
Micrograms per Quart to Grains per Liter Converter — ug/qt to gr/L
Convert Microgram per Quart (ug/qt) to Grain per Liter (gr/L) using the exact conversion factor (1 microgram per quart = 0.0000163072 grain per liter). See the formula, worked examples, and conversion table.
Micrograms per Quart to Grains 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 1.05668821e-6 / 0.06479891.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Quart to Grains per Liter
Microgram per Quart and Grain 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
grains per liter = micrograms per quart × 0.0000163071911153
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per quart equals 0.00000105668820943 base units, and 1 grain per liter equals 0.06479891 base units, so dividing one by the other gives the direct microgram per quart-to-grain per liter factor of 0.0000163071911153.
Simple example
1 ug/qt × 0.00001630719112 = 0.0000163072 gr/L
1 microgram per quart = 0.0000163072 grains per liter.
Real-world example
1,000 ug/qt × 0.00001630719112 = 0.0163071911 gr/L
1,000 micrograms per quart = 0.0163071911 grains per liter.
Conversion table
| Microgram per Quart (ug/qt) | Grain per Liter (gr/L) |
|---|---|
| 0.1 ug/qt | 0.0000016307 gr/L |
| 1 ug/qt | 0.0000163072 gr/L |
| 10 ug/qt | 0.0001630719 gr/L |
| 100 ug/qt | 0.0016307191 gr/L |
| 1,000 ug/qt | 0.0163071911 gr/L |
| 10,000 ug/qt | 0.1630719112 gr/L |
Reverse conversion: Grain per Liter to Microgram per Quart
0.0000163072 gr/L × 61322.63938 = 1.000000545 ug/qt
0.0000163072 grains per liter = 1.000000545 micrograms per quart.
micrograms per quart = grains per liter × 61322.6393761
For a page dedicated to this direction, see Grain per Liter to Microgram per Quart.
Understanding the Microgram per Quart (ug/qt)
Mass per volume density.
Understanding the Grain per Liter (gr/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per liter are in 1 microgram per quart?
1 microgram per quart equals 0.0000163072 grains per liter, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per quart to grain per liter?
Multiply the microgram per quart value by 0.00001630719112. The converter above does this instantly to whatever precision you set.
How do I convert grain per liter back to microgram per quart?
Use the reverse factor: 1 grain per liter equals 61,322.63938 micrograms per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per quart?
Microgram per Quart (ug/qt) is a unit of density.
What is a grain per liter?
Grain per Liter (gr/L) is a unit of density.
Is the microgram per quart to grain per liter conversion exact?
Yes. Both microgram per quart and grain per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.00001630719112 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.