Mass concentration.
Grams per Gallon to Micrograms per Liter Converter — g/gal to ug/L
Convert Gram per Gallon (g/gal) to Microgram per Liter (ug/L) using the exact conversion factor (1 gram per gallon = 264,172.0524 microgram per liter). See the formula, worked examples, and conversion table.
Grams per Gallon to Micrograms per Liter 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 0.2641720524 / 1e-6.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Grams per Gallon to Micrograms per Liter
Gram per Gallon and Microgram per Liter 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 liter = grams per gallon × 264172.052358
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per gallon equals 0.264172052358 base units, and 1 microgram per liter equals 0.000001 base units, so dividing one by the other gives the direct gram per gallon-to-microgram per liter factor of 264172.052358.
Simple example
1 g/gal × 264172.0524 = 264,172.0524 ug/L
1 gram per gallon = 264,172.0524 micrograms per liter.
Real-world example
100 g/gal × 264172.0524 = 26,417,205.24 ug/L
100 grams per gallon = 26,417,205.24 micrograms per liter.
Conversion table
| Gram per Gallon (g/gal) | Microgram per Liter (ug/L) |
|---|---|
| 0.001 g/gal | 264.1720524 ug/L |
| 0.01 g/gal | 2,641.720524 ug/L |
| 0.1 g/gal | 26,417.20524 ug/L |
| 1 g/gal | 264,172.0524 ug/L |
| 10 g/gal | 2,641,720.524 ug/L |
| 100 g/gal | 26,417,205.24 ug/L |
Reverse conversion: Microgram per Liter to Gram per Gallon
1 ug/L × 0.000003785411784 = 0.0000037854 g/gal
1 microgram per liter = 0.0000037854 grams per gallon.
grams per gallon = micrograms per liter × 0.000003785411784
For a page dedicated to this direction, see Microgram per Liter to Gram per Gallon.
Understanding the Gram per Gallon (g/gal)
Mass concentration.
Understanding the Microgram per Liter (ug/L)
Mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms per liter are in 1 gram per gallon?
1 gram per gallon equals 264,172.0524 micrograms per liter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per gallon to microgram per liter?
Multiply the gram per gallon value by 264172.0524. The converter above does this instantly to whatever precision you set.
How do I convert microgram per liter back to gram per gallon?
Use the reverse factor: 1 microgram per liter equals 0.0000037854 grams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of chemistry.
What is a microgram per liter?
Microgram per Liter (ug/L) is a unit of chemistry.
Is the gram per gallon to microgram per liter conversion exact?
Yes. Both gram per gallon and microgram per liter are defined by fixed standards rather than physical artifacts, so the factor of 264172.0524 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.