Tablespoons to Fluid Ounces
An instant tablespoons-to-fluid ounces converter, with the formula and a reference table below.
| Tablespoons | Fluid Ounces |
|---|---|
| 1 tbsp | 0.5 fl oz |
| 2 tbsp | 1 fl oz |
| 3 tbsp | 1.5 fl oz |
| 5 tbsp | 2.5 fl oz |
| 10 tbsp | 5 fl oz |
| 25 tbsp | 12.5 fl oz |
| 50 tbsp | 25 fl oz |
| 100 tbsp | 50 fl oz |
How to use
- Enter a value in the Tablespoons field.
- The Fluid Ounces figure appears immediately — no button to press.
- Typing in the Fluid Ounces field converts back to Tablespoons the same way.
- Use the reference table for the values that come up most often.
Tablespoons to Fluid Ounces formula
To convert tablespoons to fluid ounces, multiply by 0.5.
fl oz = tbsp × 0.5
Put another way, one tablespoon is exactly 1/2 of a fluid ounce.
Why this factor: the tablespoon and the fluid ounce are both defined against the liter, so dividing one definition by the other gives 0.5 directly. Both definitions are set out in full below.
To go the other way, divide by 0.5 — or use the Fluid Ounces to Tablespoons converter, which is the same calculation reversed.
Worked example
Take 8 tbsp and multiply by the factor 0.5: the result is 4 fl oz.
8 tbsp × 0.5 = 4 fl oz
The converter above does this for any value you type, in either direction.
What is a tablespoon?
A US tablespoon is a standard cooking measure equal to three teaspoons.
Definition: Exactly half a US fluid ounce, so about 14.7868 milliliters.
Where it is used: American recipes, medication dosing instructions, and nutrition labeling.
Worth knowing: Australian tablespoons are 20 mL, not 15 — a real difference when scaling a recipe.
What is a fluid ounce?
A US fluid ounce is a small liquid volume, one eighth of a cup.
Definition: Exactly one 128th of a US liquid gallon, so exactly 29.5735295625 milliliters.
Where it is used: Beverage cans and bottles, cosmetics, and small liquid quantities in the US.
Worth knowing: Measures volume, not weight — a fluid ounce of water weighs about 1.04 avoirdupois ounces. The imperial fluid ounce is 28.41 mL.
Tablespoons vs Fluid Ounces
The tablespoon and the fluid ounce belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many fluid ounces are in a tablespoon?
One tablespoon equals 0.5 fluid ounces.
What is the formula to convert tablespoons to fluid ounces?
Multiply the number of tablespoons by 0.5. To reverse it, divide by 0.5 instead.
How do I convert fluid ounces back to tablespoons?
Divide by 0.5, which is the same as multiplying by 2.
How many fluid ounces are in 10 tablespoons?
10 tbsp works out to 5 fl oz.
Is there anything to watch out for with tablespoons?
Australian tablespoons are 20 mL, not 15 — a real difference when scaling a recipe.
How is the tablespoon defined?
Exactly half a US fluid ounce, so about 14.7868 milliliters.