Mass concentration.
Milligrams per Fluid ounce to Micrograms per Gallon Converter — mg/fl oz to ug/gal
Convert Milligram per Fluid ounce (mg/fl oz) to Microgram per Gallon (ug/gal) using the exact conversion factor (1 milligram per fluid ounce = 128,000 microgram per gallon). See the formula, worked examples, and conversion table.
Milligrams per Fluid ounce 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 0.0338140227 / 2.64172052e-7.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Fluid ounce to Micrograms per Gallon
Milligram per Fluid ounce 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 = milligrams per fluid ounce × 128000
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per fluid ounce equals 0.0338140227018 base units, and 1 microgram per gallon equals 2.641721e-7 base units, so dividing one by the other gives the direct milligram per fluid ounce-to-microgram per gallon factor of 128000.
Simple example
1 mg/fl oz × 128000 = 128,000 ug/gal
1 milligram per fluid ounce = 128,000 micrograms per gallon.
Real-world example
100 mg/fl oz × 128000 = 12,800,000 ug/gal
100 milligrams per fluid ounce = 12,800,000 micrograms per gallon.
Conversion table
| Milligram per Fluid ounce (mg/fl oz) | Microgram per Gallon (ug/gal) |
|---|---|
| 0.001 mg/fl oz | 128 ug/gal |
| 0.01 mg/fl oz | 1,280 ug/gal |
| 0.1 mg/fl oz | 12,800 ug/gal |
| 1 mg/fl oz | 128,000 ug/gal |
| 10 mg/fl oz | 1,280,000 ug/gal |
| 100 mg/fl oz | 12,800,000 ug/gal |
Reverse conversion: Microgram per Gallon to Milligram per Fluid ounce
1 ug/gal × 0.0000078125 = 0.0000078125 mg/fl oz
1 microgram per gallon = 0.0000078125 milligrams per fluid ounce.
milligrams per fluid ounce = micrograms per gallon × 0.0000078125
For a page dedicated to this direction, see Microgram per Gallon to Milligram per Fluid ounce.
Understanding the Milligram per Fluid ounce (mg/fl oz)
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 milligram per fluid ounce?
1 milligram per fluid ounce equals 128,000 micrograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per fluid ounce to microgram per gallon?
Multiply the milligram per fluid ounce value by 128000. The converter above does this instantly to whatever precision you set.
How do I convert microgram per gallon back to milligram per fluid ounce?
Use the reverse factor: 1 microgram per gallon equals 0.0000078125 milligrams per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per fluid ounce?
Milligram per Fluid ounce (mg/fl oz) is a unit of chemistry.
What is a microgram per gallon?
Microgram per Gallon (ug/gal) is a unit of chemistry.
Is the milligram per fluid ounce to microgram per gallon conversion exact?
Yes. Both milligram per fluid ounce and microgram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 128000 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.