Convert Milliliter to Imperial Fluid Ounce
Convert milliliters to imperial fluid ounces instantly. 1 milliliter = 0.0351950797 imperial fluid ounce — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Imperial 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.
Imperial Fluid Ounce
An imperial fluid ounce is 1/160 of an imperial gallon (28.4131 mL).
Defined so that ten fluid ounces make an imperial half-pint.
Used in UK and Commonwealth recipes and labels.
UK, 1824.
Milliliter to Imperial Fluid Ounce conversion formula
The relationship between milliliters and imperial fluid ounces:
To convert milliliters to imperial fluid ounces, multiply the value in milliliters by 0.0351950797. To reverse, multiply imperial fluid ounces by 28.4130625.
How to use this converter
Type a value into the calculator. The result in imperial 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 Imperial Fluid Ounce to Milliliter converter for the reverse direction.
Step-by-step: convert milliliters to imperial fluid ounces
- Write down the value in milliliters (mL).
- Multiply that value by the factor 0.0351950797.
- The product is the equivalent value in imperial fluid ounces (fl oz).
- To reverse, multiply the imperial fluid ounce value by 28.4130625.
Worked examples
Example 1 — Convert 1 mL to fl oz:
1 × 0.0351950797 = 0.0351950797 fl oz
Example 2 — Convert 100 mL to fl oz:
100 × 0.0351950797 = 3.5195079728 fl oz
Real-world example — Plastic-film thickness alternates
A 150-milliliter plastic film converts cleanly to imperial fluid ounces — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 mL × 0.0351950797 = 5.2792619592 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 imperial fluid ounces for direct comparison across supplier datasheets.
70 mL × 0.0351950797 = 2.4636555809 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 × 0.0351950797 = 0.1055852392 fl oz
Milliliter to Imperial Fluid Ounce conversion table
Standard reference values for converting milliliters to imperial fluid ounces:
| Milliliter [mL] | Imperial Fluid Ounce [fl oz] |
|---|---|
| 0.01 | 0.0003519508 |
| 0.1 | 0.003519508 |
| 1 | 0.0351950797 |
| 2 | 0.0703901595 |
| 3 | 0.1055852392 |
| 4 | 0.1407803189 |
| 5 | 0.1759753986 |
| 10 | 0.3519507973 |
| 20 | 0.7039015946 |
| 30 | 1.0558523918 |
| 40 | 1.4078031891 |
| 50 | 1.7597539864 |
| 100 | 3.5195079728 |
| 500 | 17.5975398639 |
| 1000 | 35.1950797279 |
Frequently asked questions
How many imperial fluid ounces is 1 milliliter?
How do I convert milliliters to imperial fluid ounces?
How do I convert imperial fluid ounces back to milliliters?
How many imperial 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 = 0.0351950797 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.