A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes.
Teaspoon to Metric tablespoon
Convert Teaspoon to Metric tablespoon 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 metric tablespoon is defined as exactly 15 milliliters.
metric tbsp = tsp × 0.3285947729
Results update instantly for Teaspoon to Metric tablespoon conversions.
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Formula
metric tbsp = tsp × 0.3285947729
tsp = metric tbsp × 3.043262043
Conversion table
| 1 tsp | 0.328595 metric tbsp |
| 5 tsp | 1.642974 metric tbsp |
| 10 tsp | 3.285948 metric tbsp |
| 20 tsp | 6.571895 metric tbsp |
| 50 tsp | 16.429739 metric tbsp |
| 100 tsp | 32.859477 metric tbsp |
| 500 tsp | 164.297386 metric tbsp |
| 1000 tsp | 328.594773 metric tbsp |
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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 metric tablespoon (metric tbsp). A metric tablespoon is defined as exactly 15 milliliters.
How do I convert teaspoon to metric tablespoon?
Multiply the teaspoon value by 0.3285947729. For example, 10 tsp × 0.3285947729 = 3.285948 metric tbsp.
Is the teaspoon to metric tablespoon 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 metric tablespoon back to teaspoon?
Yes. Multiply the metric tablespoon value by 3.043262043 to get teaspoon.
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About this conversion
This page converts teaspoon (tsp) to metric tablespoon (metric tbsp) within the cooking converter.
A US teaspoon is a customary volume unit equal to 4.92892159375 milliliters, commonly used in recipes. A metric tablespoon is defined as exactly 15 milliliters.
The formula is metric tbsp = tsp × 0.3285947729, 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 metric tablespoon.