1 Teaspoon to Ounces

1 tsp ≈ 0.16667 fl oz

Calculation: fl oz = 1 tsp × 0.166667 ≈ 0.16667 fl oz

How much is 1 tsp?

4.9 mL (0.17 fl oz) is about one metric teaspoon, a standard small medicine dose.

What does 1 tsp look like?

Illustration of a medicine dropper (teaspoon volume) — 4.9 mL (0.17 fl oz) is about one metric teaspoon, a standard small medicine dose.

1 tsp on the ounce scale

1 tsp = 0.1667 fl oz

Did you know? One teaspoon is 5 mL.

The metric teaspoon is exactly 5 mL. The US customary teaspoon is 4.93 mL — close enough for cooking.

How to Convert Teaspoon to Ounce

1 Teaspoon = 16 ounces

Ounce = Teaspoon × 16

Example: 1 tsp × 16 = 16 fl oz

Reverse Conversion

To convert ounces back to Teaspoons:

Remember, 1 ounce equals 6 Teaspoons.
To convert 16 fl oz to tsp, multiply 16 x 6, resulting in 1 tsp.

1 tsp is also equal to:

4.9289 milliliter
0.0049289 liter
0.020833 cup
0.010417 pint
0.0052083 quart

Frequently Asked Questions

How much is 1 Teaspoon in ounces?

1 Teaspoon equals 0.16667 ounces. This is calculated by multiplying 1 by the conversion factor 0.166667.

What does 1 Teaspoon look like in ounces?

1 Teaspoon (0.16667 ounces) is one to three teaspoons — a tablespoon worth.

How do you calculate 1 Teaspoon to ounces?

Multiply 1 by the conversion factor 0.166667. The calculation is 1 × 0.166667 = 0.16667 ounces. This factor is defined by international measurement standards.

1 Teaspoon = 0.166667 ounces — conversion chart

Nearby Conversions

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

Also convert Teaspoons to:

Teaspoons to Tablespoons

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

By Adilson 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.