Convert Milliliter to US Fluid Ounce
Convert milliliters to us fluid ounces instantly. 1 milliliter = 0.0338140227 us fluid ounce — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Fluid Ounce to Milliliter converter for the reverse conversion.
Units explained
Milliliter
A milliliter is one thousandth of a liter, exactly equal to one cubic centimeter.
Formed with the SI prefix milli- applied to the liter.
The standard small-volume unit in cooking, medicine and the laboratory.
Metric prefix system.
US Fluid Ounce
A US fluid ounce is 1/128 of a US gallon (29.5735 mL).
Derived from the gallon subdivision; distinct from the slightly smaller UK fluid ounce.
Standard for US beverage and nutrition labeling.
English customary; US since 1824.
Milliliter to US Fluid Ounce conversion formula
The relationship between milliliters and us fluid ounces:
To convert milliliters to us fluid ounces, multiply the value in milliliters by 0.0338140227. To reverse, multiply us fluid ounces by 29.5735295625.
How to use this converter
Type a value into the calculator. The result in us fluid ounces updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Fluid Ounce to Milliliter converter for the reverse direction.
Step-by-step: convert milliliters to us fluid ounces
- Write down the value in milliliters (mL).
- Multiply that value by the factor 0.0338140227.
- The product is the equivalent value in us fluid ounces (fl oz).
- To reverse, multiply the us fluid ounce value by 29.5735295625.
Worked examples
Example 1 — Convert 1 mL to fl oz:
1 × 0.0338140227 = 0.0338140227 fl oz
Example 2 — Convert 100 mL to fl oz:
100 × 0.0338140227 = 3.3814022702 fl oz
Real-world example — Plastic-film thickness alternates
A 150-milliliter plastic film converts cleanly to us fluid ounces — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 mL × 0.0338140227 = 5.0721034053 fl oz
Real-world example — Hair-width scale measurements
A 70-milliliter measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like us fluid ounces for direct comparison across supplier datasheets.
70 mL × 0.0338140227 = 2.3669815891 fl oz
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 milliliters), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 mL × 0.0338140227 = 0.1014420681 fl oz
Milliliter to US Fluid Ounce conversion table
Standard reference values for converting milliliters to us fluid ounces:
| Milliliter [mL] | US Fluid Ounce [fl oz] |
|---|---|
| 0.01 | 0.0003381402 |
| 0.1 | 0.0033814023 |
| 1 | 0.0338140227 |
| 2 | 0.0676280454 |
| 3 | 0.1014420681 |
| 4 | 0.1352560908 |
| 5 | 0.1690701135 |
| 10 | 0.338140227 |
| 20 | 0.676280454 |
| 30 | 1.0144206811 |
| 40 | 1.3525609081 |
| 50 | 1.6907011351 |
| 100 | 3.3814022702 |
| 500 | 16.9070113509 |
| 1000 | 33.8140227018 |
Frequently asked questions
How many us fluid ounces is 1 milliliter?
How do I convert milliliters to us fluid ounces?
How do I convert us fluid ounces back to milliliters?
How many us fluid ounces is 100 milliliters?
Popular volume unit conversions
Convert Milliliter to other volume units
Show all Milliliter conversions
Metric / SI (13 units)
US Customary (Liquid) (15 units)
US Customary (Dry) (5 units)
Imperial (UK) (14 units)
Cubic (length-derived) (4 units)
Cooking / Culinary (5 units)
Sources & references
Conversion factor (1 mL = 0.0338140227 fl oz) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.