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Volume
Milliliters to Fluid ounces
Convert milliliters (mL) to fluid ounces (fl oz). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 mL = 0.033814 fl oz
Milliliters to Fluid ounces Conversion Table
Common values, ready to copy:
| milliliters | fluid ounces |
|---|---|
| 1 mL | 0.033814 fl oz |
| 2 mL | 0.067628 fl oz |
| 5 mL | 0.16907 fl oz |
| 10 mL | 0.338141 fl oz |
| 25 mL | 0.845351 fl oz |
| 50 mL | 1.6907 fl oz |
| 100 mL | 3.3814 fl oz |
| 1,000 mL | 33.8141 fl oz |
Formula
fluid ounces = milliliters × 3.38140565e-2
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
About Milliliters and Fluid ounces
Milliliters (mL): One thousandth of a liter, where the liter is defined as one cubic decimeter; not strictly an SI unit (the SI volume unit is the cubic meter) but universal in cooking, medicine, and chemistry. Common uses: Liquid medication dosing, lab work, cooking (especially in metric countries), bartending, and any small-volume liquid measurement.
Fluid ounces (fl oz): 1/128 of a US gallon, or 29.5735 mL; the UK imperial fluid ounce is slightly different at 28.4131 mL, a remnant of pre-metric British measurement. Common uses: US beverage container sizes (a 12-oz soda can), US liquid recipe measurements, and UK pub measures for spirits (where a 'single' is 25 or 35 mL but historically tracked from imperial fl oz).
How the conversion works
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
The exact relationship is fluid ounces = milliliters × 3.38140565e-2, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between milliliters and fluid ounces comes up wherever volume measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.