Mass concentration.
Ounces per Fluid ounce to Milligrams per Gallon Converter — oz/fl oz to mg/gal
Convert Ounce per Fluid ounce (oz/fl oz) to Milligram per Gallon (mg/gal) using the exact conversion factor (1 ounce per fluid ounce = 3,628,738.96 milligram per gallon). See the formula, worked examples, and conversion table.
Ounces per Fluid ounce to Milligrams 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 958.6114185 / 0.0002641720524.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Fluid ounce to Milligrams per Gallon
Ounce per Fluid ounce and Milligram 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
milligrams per gallon = ounces per fluid ounce × 3628738.96
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per fluid ounce equals 958.611418535 base units, and 1 milligram per gallon equals 0.000264172052358 base units, so dividing one by the other gives the direct ounce per fluid ounce-to-milligram per gallon factor of 3628738.96.
Simple example
1 oz/fl oz × 3628738.96 = 3,628,738.96 mg/gal
1 ounce per fluid ounce = 3,628,738.96 milligrams per gallon.
Real-world example
100 oz/fl oz × 3628738.96 = 362,873,896 mg/gal
100 ounces per fluid ounce = 362,873,896 milligrams per gallon.
Conversion table
| Ounce per Fluid ounce (oz/fl oz) | Milligram per Gallon (mg/gal) |
|---|---|
| 0.001 oz/fl oz | 3,628.73896 mg/gal |
| 0.01 oz/fl oz | 36,287.3896 mg/gal |
| 0.1 oz/fl oz | 362,873.896 mg/gal |
| 1 oz/fl oz | 3,628,738.96 mg/gal |
| 10 oz/fl oz | 36,287,389.6 mg/gal |
| 100 oz/fl oz | 362,873,896 mg/gal |
Reverse conversion: Milligram per Gallon to Ounce per Fluid ounce
1 mg/gal × 2.755778e-7 = 2.755778e-7 oz/fl oz
1 milligram per gallon = 2.755778e-7 ounces per fluid ounce.
ounces per fluid ounce = milligrams per gallon × 2.755778e-7
For a page dedicated to this direction, see Milligram per Gallon to Ounce per Fluid ounce.
Understanding the Ounce per Fluid ounce (oz/fl oz)
Mass concentration.
Understanding the Milligram per Gallon (mg/gal)
Mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per gallon are in 1 ounce per fluid ounce?
1 ounce per fluid ounce equals 3,628,738.96 milligrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per fluid ounce to milligram per gallon?
Multiply the ounce per fluid ounce value by 3628738.96. The converter above does this instantly to whatever precision you set.
How do I convert milligram per gallon back to ounce per fluid ounce?
Use the reverse factor: 1 milligram per gallon equals 2.755778e-7 ounces per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per fluid ounce?
Ounce per Fluid ounce (oz/fl oz) is a unit of chemistry.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of chemistry.
Is the ounce per fluid ounce to milligram per gallon conversion exact?
Yes. Both ounce per fluid ounce and milligram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 3628738.96 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.