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Fluid Ounces to Teaspoons Converter

Convert US fluid ounces to teaspoons and teaspoons to fluid ounces instantly. Bidirectional volume converter with formula and common values.

fl oz

Teaspoons

21

tsp

3.5 fl oz = 21 tsp

tsp = fl oz × 6

How to Convert Fluid Ounces to Teaspoons

To convert US fluid ounces to teaspoons, multiply by 6. This is an exact conversion: 1 fl oz = 2 tbsp = 6 tsp in the US customary system.

Conversion Formula

  • Fluid Ounces to Teaspoons: tsp = fl oz × 6
  • Teaspoons to Fluid Ounces: fl oz = tsp ÷ 6

Common Conversions

Fluid OuncesTeaspoons
0.53
16
212
318
424
636
848

Related

FAQ

How many teaspoons are in a fluid ounce?

One US fluid ounce equals exactly 6 US teaspoons.

How do I convert fluid ounces to teaspoons?

Multiply the number of fluid ounces by 6. For example, 3.5 fl oz × 6 = 21 teaspoons.

How many fluid ounces in 12 teaspoons?

Twelve teaspoons equal 2 fluid ounces.

Why are there 6 teaspoons in a fluid ounce?

One fluid ounce has 2 tablespoons, and each tablespoon has 3 teaspoons, giving 2 × 3 = 6 teaspoons.