An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
Ounce to Teaspoon
Convert Ounce to Teaspoon 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 teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
tsp = oz × 5.751668511
Results update instantly for Ounce to Teaspoon conversions.
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Formula
tsp = oz × 5.751668511
oz = tsp × 0.1738625928
Conversion table
| 1 oz | 5.751669 tsp |
| 5 oz | 28.758343 tsp |
| 10 oz | 57.516685 tsp |
| 20 oz | 115.03337 tsp |
| 50 oz | 287.583426 tsp |
| 100 oz | 575.166851 tsp |
| 500 oz | 2875.834256 tsp |
| 1000 oz | 5751.668511 tsp |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the ounce (oz). An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes.
What is the destination unit in this conversion?
The destination unit is the teaspoon (tsp). A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
How do I convert ounce to teaspoon?
Multiply the ounce value by 5.751668511. For example, 10 oz × 5.751668511 = 57.516685 tsp.
Is the ounce to teaspoon 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 teaspoon back to ounce?
Yes. Multiply the teaspoon value by 0.1738625928 to get ounce.
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About this conversion
This page converts ounce (oz) to teaspoon (tsp) within the cooking converter.
An avoirdupois ounce equals 1/16 pound, or about 28.35 grams, common in US recipes. A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
The formula is tsp = oz × 5.751668511, 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 ounce values already converted to teaspoon.