18 Teaspoons to Ounces

18 tsp = 3 fl oz

Calculation: fl oz = 18 tsp × 0.166667 = 3 fl oz

Teaspoon to Ounce 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 ounce scale

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18 tsp = 3 fl oz

How to Convert Teaspoon to Ounce

1 Teaspoon = 16 ounces

Ounce = Teaspoon × 16

Example: 18 tsp × 16 = 3 fl oz

Reverse Conversion

To convert ounces back to Teaspoons:

  • Remember, 1 ounce equals 6 Teaspoons.
  • To convert 3 fl oz to tsp, multiply 3 x 6, resulting in 18 tsp.

18 tsp is also equal to:

  • 88.721 milliliter
  • 0.088721 liter
  • 38 cup
  • 316 pint
  • 332 quart

Frequently Asked Questions

How much is 18 Teaspoons in ounces?

18 Teaspoons equals 3 ounces. This is calculated by multiplying 18 by the conversion factor 0.166667.

What does 18 Teaspoons look like in ounces?

18 Teaspoons (3 ounces) is several tablespoons to a cup.

How do you calculate 18 Teaspoons to ounces?

Multiply 18 by the conversion factor 0.166667. The calculation is 18 × 0.166667 = 3 ounces. This factor is defined by international measurement standards.

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18 Teaspoons = 3 ounces
18 Teaspoons = 3 ounces — conversion chart

Nearby Conversions

8 Teaspoons1.333 ounces 10 Teaspoons1.667 ounces 12 Teaspoons2 ounces 15 Teaspoons2.5 ounces 24 Teaspoons4 ounces

For general conversions between Teaspoons and ounces, see the Teaspoons to ounces 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.