21 Milliliters to Ounces

21 mL ≈ 0.71009 fl oz

Calculation: fl oz = 21 mL × 0.033814 ≈ 0.71009 fl oz

Milliliter to Ounce Converter

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How much is 21 mL?

21 mL (0.71 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

What does 21 mL look like?

Illustration of a small measuring cup
21 mL (0.71 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

21 mL on the ounce scale

mL01020304050fl oz00.511.5

21 mL = 0.7101 fl oz

How to Convert Milliliter to Ounce

1 milliliter = 0.033814 ounces

Ounce = Milliliter × 0.033814

Example: 21 mL × 0.033814 = 0.71009 fl oz

Reverse Conversion

To convert ounces back to milliliters:

  • Remember, 1 ounce equals 29.5735 milliliters.
  • To convert 0.71009 fl oz to mL, multiply 0.71009 x 29.5735, resulting in 21 mL.

21 mL is also equal to:

  • 0.021 liter
  • 0.088762 cup
  • 0.044381 pint
  • 0.02219 quart

Frequently Asked Questions

How much is 21 milliliters in ounces?

21 milliliters equals 0.71009 ounces. This is calculated by multiplying 21 by the conversion factor 0.033814.

What does 21 milliliters look like in ounces?

21 milliliters (0.71009 ounces) is a fluid ounce or a shot glass.

How do you calculate 21 milliliters to ounces?

Multiply 21 by the conversion factor 0.033814. The calculation is 21 × 0.033814 = 0.71009 ounces. This factor is defined by international measurement standards.

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21 milliliters = 0.710094 ounces
21 milliliters = 0.710094 ounces — conversion chart

Nearby Conversions

11 milliliters0.372 ounces 12 milliliters0.4058 ounces 13 milliliters0.4396 ounces 14 milliliters0.4734 ounces 15 milliliters0.5072 ounces 16 milliliters0.541 ounces 17 milliliters0.5748 ounces 18 milliliters0.6087 ounces 19 milliliters0.6425 ounces 20 milliliters0.6763 ounces 22 milliliters0.7439 ounces 23 milliliters0.7777 ounces 24 milliliters0.8115 ounces 25 milliliters0.8454 ounces 26 milliliters0.8792 ounces 27 milliliters0.913 ounces 28 milliliters0.9468 ounces 29 milliliters0.9806 ounces 30 milliliters1.014 ounces 31 milliliters1.048 ounces

For general conversions between milliliters and ounces, see the milliliters to ounces converter.

Also convert Milliliters to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.