Convert teaspoons to milliliters

1 tsp=4.92892ml

Use the converter below to change any teaspoons value into milliliters instantly — with formula, conversion table, and real-world examples.

You have

Equals

4.92892

Conversion formula

Forward

milliliters = teaspoons × 4.92892

Reverse

teaspoons = milliliters × 0.2029

Example: 10 tsp × 4.92892 = 49.2892 ml.

About both units

From

Teaspoon

tsp

The teaspoon equals 4.929 ml in the US, rounded to 5 ml in most recipes and on medication labels. The relationship 3 teaspoons = 1 tablespoon is universal across US, UK and metric systems. Precision medicine and small-volume cooking rely on teaspoons.

Real-world: 1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.

Read full teaspoon reference →

Milliliter

The millilitre equals one thousandth of a litre, identical to one cubic centimetre (1 cc). Essential in medicine, cooking and science. A standard teaspoon holds about 5 ml; a tablespoon 15 ml. Medication syringes and baby-formula measures are in ml.

Real-world: A teaspoon holds about 5 ml. An espresso shot is 25–30 ml. An insulin pen delivers 0.1 ml increments.

Read full milliliter reference →

Teaspoon to Milliliter conversion table

Common teaspoons to milliliters values for quick reference.

Teaspoon (tsp)	Milliliter (ml)
1 tsp	4.92892 ml
2 tsp	9.85784 ml
5 tsp	24.6446 ml
10 tsp	49.2892 ml
20 tsp	98.5784 ml
50 tsp	246.446 ml
100 tsp	492.892 ml
200 tsp	985.784 ml
500 tsp	2,464.46 ml
1,000 tsp	4,928.92 ml

Tips & common mistakes

Quick tips

1 tsp = 5 ml (practical); 4.929 ml (US legal).
3 tsp = 1 tbsp universally.
Use a proper measuring spoon — household teaspoons vary 3–8 ml.

Avoid these

Using a regular cutlery teaspoon for medication — can over- or under-dose by 30–60%.
Mixing tsp and tbsp — 3× difference.
Assuming "a pinch" or "a dash" is reproducible — it varies 0.1 to 0.5 ml.

Frequently asked questions

How many milliliters in a teaspoon?

One teaspoon equals 4.92892 milliliters.

How do I convert teaspoons to milliliters?

Multiply the teaspoon value by 4.92892 to get the equivalent in milliliters.

What is 100 teaspoons in milliliters?

100 teaspoons equals 492.892 milliliters.

Is a teaspoon bigger than a milliliter?

Yes. 1 teaspoon equals 4.92892 milliliters, so one teaspoon is larger.

How to convert teaspoons to milliliters without a calculator?

Multiply by 4.93 for a quick estimate; use a calculator for precise results.

Related volume conversions

📊 See full comparison matrix →

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