18 Teaspoons to Cups

18 tsp = 0.375 cup

Calculation: cup = 18 tsp × 0.0208333 = 0.375 cup

Teaspoon to Cup Converter

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How much is 18 tsp?

89 mL (3.0 fl oz) is about a demitasse cup, often used for espresso or Turkish coffee.

What does 18 tsp look like?

Illustration of a demitasse cup
89 mL (3.0 fl oz) is about a demitasse cup, often used for espresso or Turkish coffee.

18 tsp on the cup scale

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18 tsp = 0.375 cup

How to Convert Teaspoon to Cup

1 Teaspoon = 0.0208333 cups

Cup = Teaspoon × 0.0208333

Example: 18 tsp × 0.0208333 = 38 cup

Reverse Conversion

To convert cups back to Teaspoons:

  • Remember, 1 cup equals 48 Teaspoons.
  • To convert 38 cup to tsp, multiply 38 x 48, resulting in 18 tsp.

18 tsp is also equal to:

  • 88.721 milliliter
  • 0.088721 liter
  • 316 pint
  • 332 quart
  • 3 ounce

Frequently Asked Questions

How much is 18 Teaspoons in cups?

18 Teaspoons equals 0.375 cups. This is calculated by multiplying 18 by the conversion factor 0.0208333.

What does 18 Teaspoons look like in cups?

18 Teaspoons (0.375 cups) is several tablespoons to a cup.

How do you calculate 18 Teaspoons to cups?

Multiply 18 by the conversion factor 0.0208333. The calculation is 18 × 0.0208333 = 0.375 cups. This factor is defined by international measurement standards.

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18 Teaspoons = 0.375 cups
18 Teaspoons = 0.375 cups — conversion chart

Nearby Conversions

8 Teaspoons0.1667 cups 10 Teaspoons0.2083 cups 12 Teaspoons0.25 cups 15 Teaspoons0.3125 cups 24 Teaspoons0.5 cups

For general conversions between Teaspoons and cups, see the Teaspoons to cups converter.

Also convert Teaspoons 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.