What Is Tablespoon US (tbsp)?
The Tablespoon US, written as tbsp, is a small volume unit used mainly in cooking recipes in the United States. It measures how much space a liquid or loose ingredient takes up. One US tablespoon is bigger than a teaspoon and smaller than a cup. It helps people use the right amount of ingredients without needing a scale.
Definition
In the modern US measuring system, one US tablespoon is defined as exactly 14.7868 milliliters. In normal everyday use and on food labels, this is almost always rounded to 15 milliliters.
You can also define one US tablespoon using other US units:
- 1 US tablespoon = 3 US teaspoons
- 1 US tablespoon = 1/16 US cup
- 1 US tablespoon = 1/2 US fluid ounce
This unit is used for liquids like milk and oil and also for dry ingredients like sugar and spices in home cooking.
History / Origin
The word tablespoon comes from the idea of using a table spoon, the kind of spoon used for eating at the table, as a rough measure. Long ago, cooks did not have standard measuring cups, so they used common household spoons. Over time, this was not accurate enough for baking and food production.
To fix this problem, the tablespoon was given a clear size and became part of standard measuring sets in the United States. The size was linked to other fluid units so that all kitchen and food measurements could match. Today, sets of measuring spoons include a tablespoon that is made to a fixed size so recipes work the same way in every kitchen.
Symbol & Abbreviation
The most common short forms for the Tablespoon US are:
- tbsp or Tbsp
- T or Tb in some cookbooks
Important notes:
- Teaspoon is usually written as tsp or t, which is much smaller.
- Always read the recipe key or legend if it is given so you know what each letter means.
- In nutrition and science, the size is often treated as exactly 15 mL, even though the legal US value is 14.7868 mL.
Current Use Around the World
The US tablespoon is mainly used in the United States and in some American style recipes in other countries. However, not every country uses the same tablespoon size. This can cause confusion when you read recipes from different places.
Common tablespoon sizes around the world:
- United States: US tablespoon, about 14.8 mL, often treated as 15 mL
- Most metric countries such as Europe and Asia: metric tablespoon, exactly 15 mL
- Australia: larger tablespoon, exactly 20 mL
- Older UK sources: used to vary, but modern British recipes usually follow the 15 mL metric tablespoon
Because of these differences, the safest choice is to use a marked measuring spoon set made for the type of recipe you are following. For example, use US measuring spoons for US recipes and metric spoons for metric recipes.
Example Conversions
Here are simple and useful conversions for the US tablespoon. For many kitchen tasks, you can round to keep things easy.
Tablespoon to Teaspoon
- 1 US tablespoon = 3 US teaspoons
- 2 US tablespoons = 6 US teaspoons
- 4 US tablespoons = 12 US teaspoons
Tablespoon to Cups
- 1 US tablespoon = 1/16 US cup
- 4 US tablespoons = 1/4 US cup
- 8 US tablespoons = 1/2 US cup
- 16 US tablespoons = 1 US cup
Tablespoon to Fluid Ounces
- 1 US tablespoon = 0.5 US fluid ounce
- 2 US tablespoons = 1 US fluid ounce
- 8 US tablespoons = 4 US fluid ounces = 1/2 cup
Tablespoon to Milliliters and Liters
Using the more exact US value:
- 1 US tablespoon = 14.7868 mL
- 2 US tablespoons = 29.5736 mL
- 4 US tablespoons = 59.1472 mL
For normal cooking, you can round:
- 1 US tablespoon ≈ 15 mL
- 3 US tablespoons ≈ 45 mL
- 5 US tablespoons ≈ 75 mL
To convert tablespoons to liters, remember that 1 liter = 1000 mL:
- 1 US tablespoon ≈ 0.015 liter
- 10 US tablespoons ≈ 0.15 liter
- 20 US tablespoons ≈ 0.3 liter
Related Units
Units closely linked to the US tablespoon include:
- Teaspoon US (tsp) about 4.93 mL, 3 teaspoons = 1 tablespoon
- US fluid ounce (fl oz) 29.5735 mL, 1 fluid ounce = 2 tablespoons
- US cup 236.588 mL, 1 cup = 16 tablespoons
- Metric tablespoon exactly 15 mL, used in many non US countries
- Milliliter (mL) metric volume unit, 1000 mL = 1 liter
- Liter (L) larger metric volume unit used for drinks and liquids
FAQs
Is a US tablespoon the same as a regular eating spoon?
No. A regular eating spoon can be bigger or smaller and is not exact. A US tablespoon for measuring is a special spoon made to a fixed size. For baking and careful recipes, you should always use real measuring spoons.
Is a US tablespoon the same as a metric tablespoon?
They are very close but not exactly the same. A US tablespoon is about 14.8 mL. A metric tablespoon is exactly 15 mL. For normal cooking, this tiny difference usually does not matter. For very careful recipes, match the spoon to the recipe system.
How many US tablespoons are in a cup?
There are 16 US tablespoons in 1 US cup. You can remember this by thinking 4 tablespoons is 1/4 cup, 8 tablespoons is 1/2 cup, and 16 tablespoons is a full cup.
How many US tablespoons are in a stick of butter?
In the United States, one standard stick of butter is 1/2 cup. Since 1 cup is 16 tablespoons, 1/2 cup is 8 tablespoons. So there are 8 US tablespoons in one stick of butter.
Can I use a US tablespoon to measure dry ingredients?
Yes. The tablespoon measures volume, not weight, so it can be used for both liquids and dry items like sugar or salt. For best results, fill the spoon and level it off with a flat edge so it is even.
Why do some recipes write T and some write tbsp?
Different cookbooks use different short forms. Many modern recipes use tbsp for tablespoon and tsp for teaspoon to avoid mistakes. If you see only the letter T or t, check the recipe notes to see what the author means.
What should I do if I only have metric milliliter markings?
If your tools are marked in milliliters, you can use 15 mL for 1 US tablespoon in most home recipes. This is close enough for almost all everyday cooking tasks.