Tablespoons to Teaspoons Converter

How to use the tablespoons to teaspoons converter

1. Enter the amount you want to convert.
2. Choose the conversion direction: tablespoons to teaspoons, or teaspoons to tablespoons.
3. Select US Customary or Metric to see the correct milliliter equivalent.
4. Read the result instantly as you type.

How the conversion works

The relationship between these two spoons is fixed: one tablespoon always holds three teaspoons. To convert tablespoons to teaspoons, multiply by three. To go the other way, divide by three.

For example, if a recipe calls for 2.5 tablespoons of vanilla extract, the math is 2.5 x 3 = 7.5 teaspoons. If you have 9 teaspoons of sugar and need tablespoons, compute 9 / 3 = 3 tablespoons.

The measurement system you choose does not change this 3:1 ratio. It only changes the underlying volume in milliliters used for reference.

US vs metric spoon sizes

While the ratio stays the same, the actual volume of a spoon differs between systems. In the United States, one tablespoon is defined as half a US fluid ounce, which is approximately 14.787 milliliters. One US teaspoon is therefore about 4.929 milliliters.

In countries that use the metric system for cooking, such as Australia, New Zealand, and the United Kingdom, a tablespoon is rounded to exactly 15 milliliters and a teaspoon to exactly 5 milliliters. This makes mental arithmetic easier when scaling recipes.

If you are converting between weight and volume, you will also need to account for ingredient density. For liquid volume conversions like cups to ounces or ml to ounces, separate tools handle those ratios.

Common cooking equivalents

Here is a quick reference table for amounts you will encounter frequently in recipes. These values apply regardless of whether you use US or metric spoons, since the 3:1 ratio is universal.

Knowing that 16 tablespoons make one US cup helps when you lose your measuring cups and only have spoons available.

When precision matters

In everyday home cooking, rounding a US tablespoon to 15 milliliters rarely causes problems. Baking, however, relies on precise ratios of leavening agents like baking powder and baking soda. Using an oversized Australian tablespoon (20 mL) in place of a US tablespoon (14.787 mL) adds roughly 35 percent more volume, which can cause a cake to rise too fast and collapse.

When following a recipe from another country, check which spoon standard the author uses. If the recipe lists ingredients in grams, weighing them on a kitchen scale eliminates spoon-size ambiguity entirely. For dry weight conversions, tools like lbs to grams can help bridge imperial and metric measurements.

Abbreviations used in recipes

Recipes abbreviate these units in several ways. Tablespoon may appear as Tbsp, tbsp, T, or tbl. Teaspoon is usually written as tsp or t. The capital letter convention (T for tablespoon, t for teaspoon) exists specifically to prevent confusion, though not all authors follow it consistently.

If a recipe simply says "1 spoon" without specifying, context usually reveals the intent. Large quantities of liquids or flour typically mean tablespoons, while small quantities of salt, spices, or extracts usually mean teaspoons.

Worked examples

Each result below was produced by the same code the tool runs, so you can check your own numbers against them.