Teaspoons to ml
One tsp equals 4.928921594 ml. Type any number and the answer appears as you type — the maths happens in your browser.
The same value in every unit
| Unit | Value |
|---|
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Common values
| teaspoons | ml |
|---|---|
| 1 tsp | 4.9289216 ml |
| 2 tsp | 9.8578432 ml |
| 3 tsp | 14.786765 ml |
| 5 tsp | 24.644608 ml |
| 10 tsp | 49.289216 ml |
| 15 tsp | 73.933824 ml |
| 20 tsp | 98.578432 ml |
| 25 tsp | 123.22304 ml |
| 50 tsp | 246.44608 ml |
| 100 tsp | 492.89216 ml |
| 500 tsp | 2464.4608 ml |
| 1000 tsp | 4928.9216 ml |
How to use
- Enter the number of teaspoons in the field.
- The result in ml updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: ml = tsp × 4.928921594. Going back the other way, one ml is 0.2028841362 tsp.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
ml = tsp × 4.928921594
Frequently asked questions
How many ml are in one teaspoons?
One tsp is 4.928921594 ml.
How do I convert teaspoons to ml?
Multiply by the factor: ml = tsp × 4.928921594.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert ml back to teaspoons?
One ml is 0.2028841362 tsp — or open the reverse page linked below.