Mass concentration.
Micrograms per Liter to Micrograms per Gallon Converter — ug/L to ug/gal
Convert Microgram per Liter (ug/L) to Microgram per Gallon (ug/gal) using the exact conversion factor (1 microgram per liter = 3.785411784 microgram per gallon). See the formula, worked examples, and conversion table.
Micrograms per Liter to Micrograms per Gallon converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Mass concentration.
Result = input x 1e-6 / 2.64172052e-7.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Liter to Micrograms per Gallon
Microgram per Liter and Microgram per Gallon both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Both are mass concentration units.
Formula
micrograms per gallon = micrograms per liter × 3.785411784
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 microgram per gallon equals 2.641721e-7 base units, so dividing one by the other gives the direct microgram per liter-to-microgram per gallon factor of 3.785411784.
Simple example
1 ug/L × 3.785411784 = 3.785411784 ug/gal
1 microgram per liter = 3.785411784 micrograms per gallon.
Real-world example
100 ug/L × 3.785411784 = 378.5411784 ug/gal
100 micrograms per liter = 378.5411784 micrograms per gallon.
Conversion table
| Microgram per Liter (ug/L) | Microgram per Gallon (ug/gal) |
|---|---|
| 0.001 ug/L | 0.0037854118 ug/gal |
| 0.01 ug/L | 0.0378541178 ug/gal |
| 0.1 ug/L | 0.3785411784 ug/gal |
| 1 ug/L | 3.785411784 ug/gal |
| 10 ug/L | 37.85411784 ug/gal |
| 100 ug/L | 378.5411784 ug/gal |
Reverse conversion: Microgram per Gallon to Microgram per Liter
3.785411784 ug/gal × 0.2641720524 = 1 ug/L
3.785411784 micrograms per gallon = 1 micrograms per liter.
micrograms per liter = micrograms per gallon × 0.264172052358
For a page dedicated to this direction, see Microgram per Gallon to Microgram per Liter.
Understanding the Microgram per Liter (ug/L)
Mass concentration.
Understanding the Microgram per Gallon (ug/gal)
Mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms per gallon are in 1 microgram per liter?
1 microgram per liter equals 3.785411784 micrograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per liter to microgram per gallon?
Multiply the microgram per liter value by 3.785411784. The converter above does this instantly to whatever precision you set.
How do I convert microgram per gallon back to microgram per liter?
Use the reverse factor: 1 microgram per gallon equals 0.2641720524 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 chemistry.
What is a microgram per gallon?
Microgram per Gallon (ug/gal) is a unit of chemistry.
Is the microgram per liter to microgram per gallon conversion exact?
Yes. Both microgram per liter and microgram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 3.785411784 used above is exact to as many digits as you choose to display.
What's the difference between mass concentration and molarity?
Mass concentration expresses how much mass of a substance is present per unit volume (for example, grams per liter). Molarity expresses the amount in moles per liter instead, which accounts for the substance's molecular weight. This category converts mass-concentration units.