21 Milliliters to Cups

21 mL ≈ 0.088762 cup

Calculation: cup = 21 mL × 0.00422675 ≈ 0.088762 cup

Milliliter to Cup Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

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 cup scale

mL01020304050cup00.050.10.150.2

21 mL = 0.0888 cup

How to Convert Milliliter to Cup

1 milliliter = 0.00422675 cups

Cup = Milliliter × 0.00422675

Example: 21 mL × 0.00422675 = 0.088762 cup

Reverse Conversion

To convert cups back to milliliters:

  • Remember, 1 cup equals 236.588 milliliters.
  • To convert 0.088762 cup to mL, multiply 0.088762 x 236.588, resulting in 21 mL.

21 mL is also equal to:

  • 0.021 liter
  • 0.044381 pint
  • 0.02219 quart
  • 0.71009 ounce

Frequently Asked Questions

How much is 21 milliliters in cups?

21 milliliters equals 0.088762 cups. This is calculated by multiplying 21 by the conversion factor 0.00422675.

What does 21 milliliters look like in cups?

21 milliliters (0.088762 cups) is a fluid ounce or a shot glass.

How do you calculate 21 milliliters to cups?

Multiply 21 by the conversion factor 0.00422675. The calculation is 21 × 0.00422675 = 0.088762 cups. This factor is defined by international measurement standards.

Share This Calculation

21 milliliters = 0.0887618 cups
21 milliliters = 0.0887618 cups — conversion chart

Nearby Conversions

11 milliliters0.04649 cups 12 milliliters0.05072 cups 13 milliliters0.05495 cups 14 milliliters0.05917 cups 15 milliliters0.0634 cups 16 milliliters0.06763 cups 17 milliliters0.07185 cups 18 milliliters0.07608 cups 19 milliliters0.08031 cups 20 milliliters0.08454 cups 22 milliliters0.09299 cups 23 milliliters0.09722 cups 24 milliliters0.1014 cups 25 milliliters0.1057 cups 26 milliliters0.1099 cups 27 milliliters0.1141 cups 28 milliliters0.1183 cups 29 milliliters0.1226 cups 30 milliliters0.1268 cups 31 milliliters0.131 cups

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.