Convert Milliliters (mL) to Teaspoons (tsp)

Q: How many teaspoons is 5 mL?

5 mL = approximately 1 teaspoon. The exact value is 1.014 tsp, but "5 mL = 1 tsp" is the standard medical conversion used by the FDA and WHO.

Q: How many mL in a teaspoon?

A US teaspoon = 4.929 mL. For medical purposes, the FDA rounds this to 5 mL. Kitchen teaspoons vary in actual volume, so use a measuring spoon for accuracy.

Q: How many teaspoons in a tablespoon?

Exactly 3 teaspoons = 1 tablespoon. This means 1 tablespoon = about 15 mL (14.787 mL exact), and 1 teaspoon = about 5 mL.

Q: Should I use mL or teaspoons for medicine?

The FDA recommends measuring in mL using an oral syringe or dosing cup for accuracy. Kitchen teaspoons are not standardized and can vary by 25-50%. This is especially important for children's medications.

1 milliliter equals 0.202884 Teaspoons.

Formula: tsp = mL × 0.202884

Milliliter to Teaspoon Converter

What Is a Milliliter?

The milliliter (mL) is a metric unit of volume equal to one thousandth of a liter (0.001 L) or 1 cubic centimeter (cm³). It is the standard unit for precise liquid measurements in medicine, science, and cooking — especially for small quantities like medication doses and flavor extracts.

What Is a Teaspoon?

The US teaspoon (tsp) is a customary unit of volume equal to ⅓ tablespoon, ⅙ fluid ounce, or approximately 4.929 milliliters. It is one of the smallest standard cooking measures and is the default unit for medicine dosing in the US (the standard medical teaspoon is defined as exactly 5 mL).

Milliliters to Teaspoons Formula

The conversion factor is:

US teaspoons = milliliters ÷ 4.929

Or equivalently: teaspoons = milliliters × 0.202884. Derived from: 1 US tsp = 4.92892 mL.

Worked Example

Convert 15 mL of cough syrup to teaspoons:

Divide: 15 ÷ 4.929 = 3.04 teaspoons

So 15 mL ≈ 3 teaspoons = 1 tablespoon. This is a common adult dose for liquid cold medicine.

Quick Estimation

5 mL = 1 teaspoon is the standard medical conversion, adopted by the FDA and WHO for medicine dosing. It overstates the actual US teaspoon (4.929 mL) by only 1.4%, which is negligible for medications. Use this: divide mL by 5.

Common Milliliters to Teaspoons Conversions

Milliliters	US Teaspoons	Context
1 mL	0.203 tsp	Single drop / precise dose
2.5 mL	0.507 tsp	Half teaspoon (child dose)
5 mL	1.014 tsp	1 teaspoon (standard medical dose)
10 mL	2.029 tsp	2 teaspoons (common adult dose)
15 mL	3.043 tsp	1 tablespoon / 3 teaspoons
30 mL	6.086 tsp	1 fluid ounce / 2 tablespoons
50 mL	10.14 tsp	Standard medicine bottle serving
100 mL	20.29 tsp	Small container

When You Need This Conversion

Medicine dosing: Liquid medications are labeled in mL, but many households measure with kitchen teaspoons. A 10 mL dose = 2 teaspoons. The FDA recommends using mL-marked syringes for accuracy.
Cooking small quantities: Vanilla extract, lemon juice, and spice extracts are often in mL on imported products. 5 mL vanilla extract = 1 teaspoon.
Baby and child care: Pediatric medications are dosed in mL. Infant acetaminophen is typically 2.5 mL = ½ teaspoon for the smallest doses.

Frequently Asked Questions

How many teaspoons is 5 mL?

5 mL = approximately 1 teaspoon. The exact value is 1.014 tsp, but "5 mL = 1 tsp" is the standard medical conversion used by the FDA and WHO.

How many mL in a teaspoon?

A US teaspoon = 4.929 mL. For medical purposes, the FDA rounds this to 5 mL. Kitchen teaspoons vary in actual volume, so use a measuring spoon for accuracy.

Is 10 mL the same as 2 teaspoons?

Yes, approximately. 10 mL = 2.03 teaspoons. For medicine dosing, 10 mL = 2 teaspoons is the accepted conversion.

How many teaspoons in a tablespoon?

Exactly 3 teaspoons = 1 tablespoon. This means 1 tablespoon = about 15 mL (14.787 mL exact), and 1 teaspoon = about 5 mL.

Should I use mL or teaspoons for medicine?

The FDA recommends measuring in mL using an oral syringe or dosing cup for accuracy. Kitchen teaspoons are not standardized and can vary by 25-50%. This is especially important for children's medications.

Common Milliliter to Teaspoon Conversions

Milliliter to Teaspoon (Part 1)

Milliliter	Teaspoon	Actions
1 milliliter	0.202884 Teaspoons
2 12 milliliters	0.50721 Teaspoons
5 milliliters	1.01442 Teaspoons
10 milliliters	2.02884 Teaspoons

Milliliter to Teaspoon (Part 2)

Milliliter	Teaspoon	Actions
15 milliliters	3.04326 Teaspoons
30 milliliters	6.08652 Teaspoons
50 milliliters	10.1442 Teaspoons
100 milliliters	20.2884 Teaspoons

Milliliters to Teaspoons Conversion Table

Reference table with common milliliters to teaspoons conversions. All values calculated with high precision.

Milliliters to Teaspoons Table
0.001 to 5

Milliliters	Teaspoons	Actions
0.001 mL	0.000202884 tsp
0.0025 mL	0.00050721 tsp
0.005 mL	0.00101442 tsp
0.01 mL	0.00202884 tsp
0.025 mL	0.0050721 tsp
0.05 mL	0.0101442 tsp
0.1 mL	0.0202884 tsp
14 mL	0.050721 tsp
12 mL	0.101442 tsp
1 mL	0.202884 tsp
2 12 mL	0.50721 tsp
5 mL	1.01442 tsp

Milliliters to Teaspoons Table
10 to 1000000

Milliliters	Teaspoons	Actions
10 mL	2.02884 tsp
25 mL	5.0721 tsp
50 mL	10.1442 tsp
100 mL	20.2884 tsp
250 mL	50.721 tsp
500 mL	101.442 tsp
1000 mL	202.884 tsp
2500 mL	507.21 tsp
5000 mL	1014.42 tsp
10000 mL	2028.84 tsp
25000 mL	5072.1 tsp
50000 mL	10144.2 tsp
100000 mL	20288.4 tsp
250000 mL	50721 tsp
500000 mL	101442 tsp
1000000 mL	202884 tsp

Teaspoons to Milliliters Table
0.0001 to 12

Teaspoons	Milliliters	Actions
0.0001 tsp	0.000492892 mL
0.00025 tsp	0.00123223 mL
0.0005 tsp	0.00246446 mL
0.001 tsp	0.00492892 mL
0.0025 tsp	0.0123223 mL
0.005 tsp	0.0246446 mL
0.01 tsp	0.0492892 mL
0.025 tsp	0.123223 mL
0.05 tsp	0.246446 mL
0.1 tsp	0.492892 mL
14 tsp	1.23223 mL
12 tsp	2.46446 mL

Teaspoons to Milliliters Table
1 to 100000

Teaspoons	Milliliters	Actions
1 tsp	4.92892 mL
2 12 tsp	12.3223 mL
5 tsp	24.6446 mL
10 tsp	49.2892 mL
25 tsp	123.223 mL
50 tsp	246.446 mL
100 tsp	492.892 mL
250 tsp	1232.23 mL
500 tsp	2464.46 mL
1000 tsp	4928.92 mL
2500 tsp	12322.3 mL
5000 tsp	24644.6 mL
10000 tsp	49289.2 mL
25000 tsp	123223 mL
50000 tsp	246446 mL
100000 tsp	492892 mL

Looking for the reverse? Convert Teaspoon to Milliliter

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Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026

By Adilson Fernandes

Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.