How many milliliters are in one US teaspoon?

One US teaspoon is equal to approximately 4.929 milliliters.

How do you convert US teaspoons to milliliters?

To convert US teaspoons (tsp) to milliliters (ml), multiply the number of teaspoons by 4.92892159375.

How do you convert milliliters to US teaspoons?

To convert milliliters (ml) to US teaspoons (tsp), divide the number of milliliters by 4.92892159375.

Is a metric teaspoon different from a US teaspoon?

Yes, a metric teaspoon is typically 5 ml, whereas a US teaspoon is slightly less (approx 4.929 ml). This calculator uses the US teaspoon.

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Teaspoons to Milliliters (tsp to ml) Converter

Created by: Sophia Bennett

Last updated: August 26, 2024

This teaspoons to milliliters (tsp to ml) converter helps you accurately convert liquid volumes between US teaspoons (tsp) and milliliters (ml). Enter a value in either unit to get the precise conversion, perfect for recipes or medication.

What is a Teaspoons to Milliliters Converter?

A Teaspoons to Milliliters (tsp to ml) Converter is a tool used to convert volume measurements from US teaspoons to milliliters. This is particularly useful in cooking, baking, medicine dosage, and chemistry where precise liquid measurements are crucial.

Many recipes, especially older ones from the United States, use teaspoons, while modern recipes and scientific applications often use milliliters. This converter helps bridge that gap for accurate measurements.

Teaspoons to Milliliters Conversion Formulas

The conversion is based on the standard US teaspoon:

US Teaspoons to Milliliters:

Milliliters = Teaspoons × 4.92892159375

Milliliters to US Teaspoons:
```
Teaspoons = Milliliters / 4.92892159375
```

Where:

tsp stands for US teaspoon(s)
ml stands for milliliter(s)

How to Convert Teaspoons to Milliliters: Example

Suppose a recipe calls for 2 US teaspoons of vanilla extract.

Identify the volume in teaspoons: 2 tsp
Apply the conversion formula (tsp to ml): Milliliters = 2 × 4.92892159375
Calculate: Milliliters ≈ 9.858 ml

So, 2 US teaspoons is approximately 9.86 milliliters.

Conversely, if a medicine dosage is 10 ml:

Identify the volume in milliliters: 10 ml
Apply the conversion formula (ml to tsp): Teaspoons = 10 / 4.92892159375
Calculate: Teaspoons ≈ 2.029 tsp

So, 10 milliliters is approximately 2.03 US teaspoons.

Common Applications

This conversion is frequently used in:

Cooking and Baking: Converting recipes between US customary and metric measurements.
Medicine: Measuring liquid medication doses accurately.
Chemistry and Labs: Preparing solutions and conducting experiments.
Bartending: Mixing drinks with precise ingredient volumes.
Cosmetics: Formulating DIY beauty products.

Sources and References

U.S. Food and Drug Administration (FDA). (n.d.). *Liquid Measures*. (General reference for US customary liquid units).
National Institute of Standards and Technology (NIST). (2008). *The NIST Guide for the Use of the International System of Units (SI)*. NIST Special Publication 811.