21.31 Milliliters to Cups

21.31 mL ≈ 0.090072 cup

Calculation: cup = 21.31 mL × 0.00422675 ≈ 0.090072 cup

Milliliter to Cup Converter

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How much is 21.31 mL?

21 mL (0.72 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

What does 21.31 mL look like?

Illustration of a small measuring cup
21 mL (0.72 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

21.31 mL on the cup scale

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21.31 mL = 0.0901 cup

How to Convert Milliliter to Cup

1 milliliter = 0.00422675 cups

Cup = Milliliter × 0.00422675

Example: 21.31 mL × 0.00422675 = 0.090072 cup

Reverse Conversion

To convert cups back to milliliters:

  • Remember, 1 cup equals 236.588 milliliters.
  • To convert 0.090072 cup to mL, multiply 0.090072 x 236.588, resulting in 21.31 mL.

21.31 mL is also equal to:

  • 0.02131 liter
  • 0.045036 pint
  • 0.022518 quart
  • 0.72058 ounce

Frequently Asked Questions

How much is 21.31 milliliters in cups?

21.31 milliliters equals 0.090072 cups. This is calculated by multiplying 21.31 by the conversion factor 0.00422675.

What does 21.31 milliliters look like in cups?

21.31 milliliters (0.090072 cups) is a fluid ounce or a shot glass.

How do you calculate 21.31 milliliters to cups?

Multiply 21.31 by the conversion factor 0.00422675. The calculation is 21.31 × 0.00422675 = 0.090072 cups. This factor is defined by international measurement standards.

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21.31 milliliters = 0.0900721 cups
21.31 milliliters = 0.0900721 cups — conversion chart

Nearby Conversions

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For general conversions between milliliters and cups, see the milliliters to cups 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.