Mass per volume density.
Milligrams per Fluid ounce to Milligrams per Milliliter Converter — mg/fl oz to mg/mL
Convert Milligram per Fluid ounce (mg/fl oz) to Milligram per Milliliter (mg/mL) using the exact conversion factor (1 milligram per fluid ounce = 0.0338140227 milligram per milliliter). See the formula, worked examples, and conversion table.
Milligrams per Fluid ounce to Milligrams per Milliliter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 0.0338140227 / 1.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Fluid ounce to Milligrams per Milliliter
Milligram per Fluid ounce and Milligram per Milliliter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
milligrams per milliliter = milligrams per fluid ounce × 0.0338140227018
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 milligram per milliliter equals 1 base unit, so dividing one by the other gives the direct milligram per fluid ounce-to-milligram per milliliter factor of 0.0338140227018.
Simple example
1 mg/fl oz × 0.0338140227 = 0.0338140227 mg/mL
1 milligram per fluid ounce = 0.0338140227 milligrams per milliliter.
Real-world example
1,000 mg/fl oz × 0.0338140227 = 33.8140227 mg/mL
1,000 milligrams per fluid ounce = 33.8140227 milligrams per milliliter.
Conversion table
| Milligram per Fluid ounce (mg/fl oz) | Milligram per Milliliter (mg/mL) |
|---|---|
| 0.1 mg/fl oz | 0.0033814023 mg/mL |
| 1 mg/fl oz | 0.0338140227 mg/mL |
| 10 mg/fl oz | 0.338140227 mg/mL |
| 100 mg/fl oz | 3.38140227 mg/mL |
| 1,000 mg/fl oz | 33.8140227 mg/mL |
| 10,000 mg/fl oz | 338.140227 mg/mL |
Reverse conversion: Milligram per Milliliter to Milligram per Fluid ounce
0.0338140227 mg/mL × 29.57352956 = 0.9999999999 mg/fl oz
0.0338140227 milligrams per milliliter = 0.9999999999 milligrams per fluid ounce.
milligrams per fluid ounce = milligrams per milliliter × 29.5735295625
For a page dedicated to this direction, see Milligram per Milliliter to Milligram per Fluid ounce.
Understanding the Milligram per Fluid ounce (mg/fl oz)
Mass per volume density.
Understanding the Milligram per Milliliter (mg/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per milliliter are in 1 milligram per fluid ounce?
1 milligram per fluid ounce equals 0.0338140227 milligrams per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per fluid ounce to milligram per milliliter?
Multiply the milligram per fluid ounce value by 0.0338140227. The converter above does this instantly to whatever precision you set.
How do I convert milligram per milliliter back to milligram per fluid ounce?
Use the reverse factor: 1 milligram per milliliter equals 29.57352956 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 density.
What is a milligram per milliliter?
Milligram per Milliliter (mg/mL) is a unit of density.
Is the milligram per fluid ounce to milligram per milliliter conversion exact?
Yes. Both milligram per fluid ounce and milligram per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 0.0338140227 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.