Mass per volume density.
Grains per Gallon to Micrograms per Liter Converter — gr/gal to ug/L
Convert Grain per Gallon (gr/gal) to Microgram per Liter (ug/L) using the exact conversion factor (1 grain per gallon = 17,118.06105 microgram per liter). See the formula, worked examples, and conversion table.
Grains per Gallon 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 0.01711806105 / 1e-6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Gallon to Micrograms per Liter
Grain per Gallon 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 = grains per gallon × 17118.0610453
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per gallon equals 0.0171180610453 base units, and 1 microgram per liter equals 0.000001 base units, so dividing one by the other gives the direct grain per gallon-to-microgram per liter factor of 17118.0610453.
Simple example
1 gr/gal × 17118.06105 = 17,118.06105 ug/L
1 grain per gallon = 17,118.06105 micrograms per liter.
Real-world example
1,000 gr/gal × 17118.06105 = 17,118,061.05 ug/L
1,000 grains per gallon = 17,118,061.05 micrograms per liter.
Conversion table
| Grain per Gallon (gr/gal) | Microgram per Liter (ug/L) |
|---|---|
| 0.1 gr/gal | 1,711.806105 ug/L |
| 1 gr/gal | 17,118.06105 ug/L |
| 10 gr/gal | 171,180.6105 ug/L |
| 100 gr/gal | 1,711,806.105 ug/L |
| 1,000 gr/gal | 17,118,061.05 ug/L |
| 10,000 gr/gal | 171,180,610.5 ug/L |
Reverse conversion: Microgram per Liter to Grain per Gallon
1 ug/L × 0.00005841783116 = 0.0000584178 gr/gal
1 microgram per liter = 0.0000584178 grains per gallon.
grains per gallon = micrograms per liter × 0.0000584178311641
For a page dedicated to this direction, see Microgram per Liter to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
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 grain per gallon?
1 grain per gallon equals 17,118.06105 micrograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to microgram per liter?
Multiply the grain per gallon value by 17118.06105. The converter above does this instantly to whatever precision you set.
How do I convert microgram per liter back to grain per gallon?
Use the reverse factor: 1 microgram per liter equals 0.0000584178 grains per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
What is a microgram per liter?
Microgram per Liter (ug/L) is a unit of density.
Is the grain per gallon to microgram per liter conversion exact?
Yes. Both grain per gallon and microgram per liter are defined by fixed standards rather than physical artifacts, so the factor of 17118.06105 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.