US teaspoons to Millilitres
Convert us teaspoons to millilitres (US tsp to mL). 1 US tsp = 4.92892159375 mL. Use the calculator, formula and conversion table.
How to convert us teaspoons to millilitres
Multiply the amount in us teaspoons by 4.92892159375 to get millilitres. The displayed factor and results are rounded to 12 significant digits.
mL = US tsp × 4.92892159375Worked example
1 US tsp = 4.92892159375 mL. Change the amount in the calculator above to use your own value.
Units and assumptions
Units are labelled explicitly: US customary liquid cups and gallons differ from imperial units. One litre is 1,000 millilitres. This converts volume only; mass conversions need a density.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
US teaspoons to Millilitres table
| US teaspoons (US tsp) | Millilitres (mL) |
|---|---|
| 0 | 0 |
| 1 | 4.92892159375 |
| 5 | 24.6446079688 |
| 10 | 49.2892159375 |
| 25 | 123.223039844 |
| 100 | 492.892159375 |
| 1,000 | 4,928.92159375 |
About this conversion
What is the formula for us teaspoons to millilitres?
mL = US tsp × 4.92892159375. Multiply the amount in us teaspoons by 4.92892159375 to get millilitres. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to us teaspoons?
Use the millilitres to us teaspoons calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the volume converter to browse all supported pairs.