Mass per volume density.
Micrograms per Liter to Grains per Liter Converter — ug/L to gr/L
Convert Microgram per Liter (ug/L) to Grain per Liter (gr/L) using the exact conversion factor (1 microgram per liter = 0.0000154324 grain per liter). See the formula, worked examples, and conversion table.
Micrograms per Liter 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 1e-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 Liter to Grains per Liter
Microgram per Liter 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 liter × 0.0000154323583529
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per liter equals 0.000001 base units, and 1 grain per liter equals 0.06479891 base units, so dividing one by the other gives the direct microgram per liter-to-grain per liter factor of 0.0000154323583529.
Simple example
1 ug/L × 0.00001543235835 = 0.0000154324 gr/L
1 microgram per liter = 0.0000154324 grains per liter.
Real-world example
1,000 ug/L × 0.00001543235835 = 0.0154323584 gr/L
1,000 micrograms per liter = 0.0154323584 grains per liter.
Conversion table
| Microgram per Liter (ug/L) | Grain per Liter (gr/L) |
|---|---|
| 0.1 ug/L | 0.0000015432 gr/L |
| 1 ug/L | 0.0000154324 gr/L |
| 10 ug/L | 0.0001543236 gr/L |
| 100 ug/L | 0.0015432358 gr/L |
| 1,000 ug/L | 0.0154323584 gr/L |
| 10,000 ug/L | 0.1543235835 gr/L |
Reverse conversion: Grain per Liter to Microgram per Liter
0.0000154324 gr/L × 64798.91 = 1.000002699 ug/L
0.0000154324 grains per liter = 1.000002699 micrograms per liter.
micrograms per liter = grains per liter × 64798.91
For a page dedicated to this direction, see Grain per Liter to Microgram per Liter.
Understanding the Microgram per Liter (ug/L)
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 liter?
1 microgram per liter equals 0.0000154324 grains per liter, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per liter to grain per liter?
Multiply the microgram per liter value by 0.00001543235835. The converter above does this instantly to whatever precision you set.
How do I convert grain per liter back to microgram per liter?
Use the reverse factor: 1 grain per liter equals 64,798.91 micrograms per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per liter?
Microgram per Liter (ug/L) 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 liter to grain per liter conversion exact?
Yes. Both microgram per liter and grain per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.00001543235835 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.