A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
Teaspoon to Ounce
Convert Teaspoon to 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.
An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
oz = tsp × 0.1738625928
Results update instantly for Teaspoon to Ounce conversions.
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Formula
oz = tsp × 0.1738625928
tsp = oz × 5.751668511
Conversion table
| 1 tsp | 0.173863 oz |
| 5 tsp | 0.869313 oz |
| 10 tsp | 1.738626 oz |
| 20 tsp | 3.477252 oz |
| 50 tsp | 8.69313 oz |
| 100 tsp | 17.386259 oz |
| 500 tsp | 86.931296 oz |
| 1000 tsp | 173.862593 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 ounce (oz). An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
How do I convert teaspoon to ounce?
Multiply the teaspoon value by 0.1738625928. For example, 10 tsp × 0.1738625928 = 1.738626 oz.
Is the teaspoon to 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 ounce back to teaspoon?
Yes. Multiply the ounce value by 5.751668511 to get teaspoon.
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About this conversion
This page converts teaspoon (tsp) to ounce (oz) within the cooking converter.
A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes. An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
The formula is oz = tsp × 0.1738625928, 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 ounce.