Milligram per Gallon (mg/gal) expresses mass in milligram per unit volume in gallon, found by dividing a mass value by a volume value.
Milligram per Gallon to Nanogram per Liter
Convert milligram per gallon (mg/gal) to nanogram per liter (ng/L) instantly with formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Density calculator
Density Converter
Convert milligram per gallon (mg/gal) to nanogram per liter (ng/L) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Nanogram per Liter (ng/L) expresses mass in nanogram per unit volume in liter, found by dividing a mass value by a volume value.
ng/L = mg/gal × 264172.052358
Results update instantly for Milligram per Gallon to Nanogram per Liter conversions.
Reserved above the conversion cards and below the converter.
Formula
ng/L = mg/gal × 264172.052358
mg/gal = ng/L × 3.785412e-6
Conversion table
| 1 mg/gal | 264172.052358 ng/L |
| 5 mg/gal | 1.32086e6 ng/L |
| 10 mg/gal | 2.641721e6 ng/L |
| 20 mg/gal | 5.283441e6 ng/L |
| 50 mg/gal | 1.32086e7 ng/L |
| 100 mg/gal | 2.641721e7 ng/L |
| 500 mg/gal | 1.32086e8 ng/L |
| 1000 mg/gal | 2.641721e8 ng/L |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both milligram per gallon and nanogram per liter measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in milligram per gallon by 264172.052358 to get nanogram per liter. To reverse the conversion, multiply a nanogram per liter value by 3.785412e-6 to get back to milligram per gallon.
Frequently asked questions
What is Milligram per Gallon (mg/gal)?
Milligram per Gallon (mg/gal) expresses mass in milligram per unit volume in gallon, found by dividing a mass value by a volume value.
What is Nanogram per Liter (ng/L)?
Nanogram per Liter (ng/L) expresses mass in nanogram per unit volume in liter, found by dividing a mass value by a volume value.
How do I convert milligram per gallon to nanogram per liter?
Multiply the milligram per gallon value by 264172.052358 to get the equivalent in nanogram per liter. For example, 5 mg/gal × 264172.052358 = 1.32086e6 ng/L.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 264172.052358 is an exact, non-rounded value.
Can I convert nanogram per liter back to milligram per gallon?
Yes. Divide the nanogram per liter value by 264172.052358, or multiply it by 3.785412e-6, to get milligram per gallon.
Reserved between the FAQ and the article so the page stays balanced.
About converting milligram per gallon to nanogram per liter
Milligram per Gallon (mg/gal) expresses mass in milligram per unit volume in gallon, found by dividing a mass value by a volume value. Nanogram per Liter (ng/L) expresses mass in nanogram per unit volume in liter, found by dividing a mass value by a volume value.
Use this calculator to move between milligram per gallon and nanogram per liter accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.