Milliliters to Teaspoons

1 mL = 0.2028841 tsp

Dosing instructions, flavoring bottles, and metric recipes often list very small volumes in milliliters. Converting mL to teaspoons helps people in the United States measure those amounts with standard kitchen spoons when a syringe or metric spoon is not on hand.

From

When you need to convert milliliters to teaspoons

Measuring a small mL amount from a metric recipe with US spoons
Converting essential oil or flavoring quantities for home recipes
Reading serving sizes on liquid supplements labeled in mL
Adapting coffee syrup or drink recipes that use milliliters

How to convert milliliters to teaspoons

tsp = mL × 0.2028841

Example: 5 mL = 1.014421 tsp

Common small volumes in mL

Milliliters (mL)	Teaspoons (tsp)
1 mL	0.2028841 tsp
2 mL	0.4057683 tsp
2.5 mL	0.5072103 tsp
5 mL	1.014421 tsp
7.5 mL	1.521631 tsp
10 mL	2.028841 tsp
15 mL	3.043262 tsp
20 mL	4.057683 tsp

Tips for converting milliliters to teaspoons

Divide mL by 5 to estimate teaspoons; the exact US teaspoon is a little under 5 mL.
Once the result reaches three teaspoons, it is simpler to measure one tablespoon instead.
For medication, follow the device supplied with the product; spoon conversions are fine for cooking but less precise for doses.

Milliliters to Teaspoons conversion table

Milliliters (mL)	Teaspoons (tsp)
1 mL	0.2028841 tsp
2 mL	0.4057683 tsp
3 mL	0.6086524 tsp
4 mL	0.8115365 tsp
5 mL	1.014421 tsp
6 mL	1.217305 tsp
7 mL	1.420189 tsp
8 mL	1.623073 tsp
9 mL	1.825957 tsp
10 mL	2.028841 tsp
15 mL	3.043262 tsp
20 mL	4.057683 tsp
25 mL	5.072103 tsp
30 mL	6.086524 tsp
40 mL	8.115365 tsp
50 mL	10.14421 tsp
75 mL	15.21631 tsp
100 mL	20.28841 tsp
250 mL	50.72103 tsp
500 mL	101.4421 tsp
1,000 mL	202.8841 tsp

About the units

Milliliters: The milliliter is a metric unit of volume, equal to one cubic centimeter.

Teaspoons: The US teaspoon equals 1/3 of a tablespoon, about 4.93 milliliters.

Frequently asked questions

How many teaspoons are in 1 milliliter?

1 milliliter equals 0.2028841 teaspoons.

How many milliliters are in 1 teaspoon?

1 teaspoon equals 4.928922 milliliters.

How do I convert milliliters to teaspoons?

Use the formula tsp = mL × 0.2028841.

What is 10 milliliters in teaspoons?

10 milliliters equals 2.028841 teaspoons.

Related conversions

Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated October 17, 2026