Understanding how many ml in a teaspoon is a fundamental skill for anyone who enjoys cooking or baking. Whether you’re following a cooking measurement guide from a recipe book or exploring a dish online, precision matters. A slight difference in measurements can alter the taste, texture, and overall success of your dish.
In the world of recipes, especially those that use the US to Metric measurement system, knowing the exact milliliter to teaspoon conversion can save you from kitchen disasters. This guide will walk you through everything, from the standard teaspoon size to accurate conversion charts, ensuring you always measure correctly, regardless of the recipe you follow.
The Basics
To master cooking measurement conversions, you need to understand two critical units: milliliters (ml) and teaspoons (tsp). A milliliter is a metric unit of volume, defined as one-thousandth of a liter. This measurement is widely used in recipes worldwide, particularly in countries following the metric system.

A standard measuring teaspoon is a small volume unit commonly used in the imperial system, especially in the United States. But not all teaspoons are equal. The US to Metric measurement of a teaspoon is 5 ml, while in other regions like the UK, it may slightly differ. Knowing this difference is essential for maintaining culinary measurement precision.
How Many ml in a Teaspoon?
When asking, “How many ml in a teaspoon?”, the most straightforward answer is that one standard teaspoon size is equal to 5 ml. This is the standard used in most recipes, especially in the United States and countries using the US to Metric measurement system. But there are slight variations around the world. For instance, in the UK, a teaspoon may be closer to 5.9 ml, while the metric system standard is exactly 5 ml.
These differences may seem small, but in precise cooking measurements, they can impact the taste, texture, and consistency of your dish. Using the correct conversion is crucial, especially when baking, where accuracy is key. This is why understanding recipe volume conversion is vital for every home chef.
Teaspoon to ml
A teaspoon to ml conversion is a common kitchen necessity. For most American recipes, you can confidently use the standard conversion of 1 teaspoon = 5 ml. This simple ratio ensures accurate measurements, even when scaling recipes up or down. Whether you’re measuring liquids like vanilla extract or dry ingredients like spices, maintaining consistent conversions is crucial.

But the difference between US and UK teaspoons can lead to confusion. For the most reliable results, always use a teaspoon measuring cup with milliliter marks. This guarantees that your measurements are accurate, regardless of which recipe you follow.
Common tsp to ml Conversions
Teaspoons | Milliliters (ml) |
1/8 tsp | 0.62 ml |
1/4 tsp | 1.25 ml |
1/2 tsp | 2.5 ml |
3/4 tsp | 3.75 ml |
1 tsp | 5 ml |
2 tsp | 10 ml |
3 tsp | 15 ml |
4 tsp | 20 ml |
This teaspoon to ml conversion chart is your quick solution for accurate measurements for baking or cooking. Keep it handy in your kitchen for quick access.
Teaspoon to ml Conversion Chart
Having a kitchen conversion chart is a game-changer. It saves you from the hassle of doing mental calculations while cooking. Whether you are a beginner or an experienced cook, this printable conversion chart can make a huge difference. It offers a comprehensive view of teaspoon capacity in ml, ensuring you always get your measurements right.
Teaspoons | Milliliters (ml) |
5 tsp | 25 ml |
6 tsp | 30 ml |
7 tsp | 35 ml |
8 tsp | 40 ml |
9 tsp | 45 ml |
10 tsp | 50 ml |
15 tsp | 75 ml |
20 tsp | 100 ml |
You can print this teaspoon measurement chart and keep it in your kitchen drawer for instant reference.
ml to Teaspoon
Converting ml to teaspoon is just as important, especially when following metric-based recipes. In the metric vs. imperial system, this conversion helps bridge the gap between these two measurement methods. For most recipes, simply divide the ml value by 5 to get the equivalent in teaspoons. For example, 10 ml equals 2 teaspoons, while 15 ml equals 3 teaspoons.

Understanding this recipe volume conversion ensures that you never add too much or too little of an ingredient. This knowledge is not just useful for cooking, but also for other tasks like measuring medicine or creating DIY beauty products.
Download the printable conversion chart here
Common ml to tsp Conversions
Milliliters (ml) | Teaspoons |
1 ml | 0.2 tsp |
5 ml | 1 tsp |
10 ml | 2 tsp |
15 ml | 3 tsp |
20 ml | 4 tsp |
25 ml | 5 tsp |
This kitchen measurement guide helps you seamlessly switch between milliliters to teaspoons, saving you time and effort in the kitchen.
Less Common ml to tsp Conversions
Milliliters (ml) | Teaspoons |
30 ml | 6 tsp |
35 ml | 7 tsp |
45 ml | 9 tsp |
50 ml | 10 tsp |
75 ml | 15 tsp |
100 ml | 20 tsp |
With this teaspoon conversion for recipes, you can confidently tackle any dish, knowing your measurements are precise.
Frequently Asked Questions (FAQs):
Is 5 ml the same as 1 teaspoon?
Yes, in most standard measurements, 1 teaspoon is equal to 5 ml.
How many ml is a 1 ⁄ 2 teaspoon?
A 1/2 teaspoon is equal to 2.5 ml.
Is 2 teaspoons the same as 10 ml?
Yes, 2 teaspoons equal 10 ml.
Is a teaspoon 15 or 20 ml?
Neither, a standard teaspoon is 5 ml. 15 ml is one tablespoon.
How much is 1 oz in milliliters?
1 fluid ounce (oz) is approximately 29.57 ml.