A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
Teaspoon to Fluid ounce
Convert Teaspoon to Fluid ounce instantly. Free online cooking unit converter with exact formula, conversion table and FAQ.
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Convert cooking volume and mass units used in recipes and nutrition workflows.
Context values
Some unit families need one extra value for a physically accurate result.
A US fluid ounce is 1/128 of a US gallon, equal to about 29.57 milliliters.
fl oz = tsp × 0.1666666667
Results update instantly for Teaspoon to Fluid ounce conversions.
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Formula
fl oz = tsp × 0.1666666667
tsp = fl oz × 6
Conversion table
| 1 tsp | 0.166667 fl oz |
| 5 tsp | 0.833333 fl oz |
| 10 tsp | 1.666667 fl oz |
| 20 tsp | 3.333333 fl oz |
| 50 tsp | 8.333333 fl oz |
| 100 tsp | 16.666667 fl oz |
| 500 tsp | 83.333333 fl oz |
| 1000 tsp | 166.666667 fl oz |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the teaspoon (tsp). A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
What is the destination unit in this conversion?
The destination unit is the fluid ounce (fl oz). A US fluid ounce is 1/128 of a US gallon, equal to about 29.57 milliliters.
How do I convert teaspoon to fluid ounce?
Multiply the teaspoon value by 0.1666666667. For example, 10 tsp × 0.1666666667 = 1.666667 fl oz.
Is the teaspoon to fluid ounce conversion exact?
Yes. This conversion uses a fixed factor defined for cooking measurement standards, so results are consistent every time.
Where is this conversion commonly used?
It's used when following recipes, adjusting ingredient quantities, or converting between US customary and metric cooking measurements.
Can I convert fluid ounce back to teaspoon?
Yes. Multiply the fluid ounce value by 6 to get teaspoon.
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About this conversion
This page converts teaspoon (tsp) to fluid ounce (fl oz) within the cooking converter.
A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes. A US fluid ounce is 1/128 of a US gallon, equal to about 29.57 milliliters.
The formula is fl oz = tsp × 0.1666666667, based on each unit's fixed relationship to the cooking converter's reference units.
Results are consistent because the conversion relies on a fixed numerical ratio rather than an estimate.
Use the calculator above for instant results, or the table below for common teaspoon values already converted to fluid ounce.