A metric tablespoon is 15 milliliters.
Metric tablespoons to Fluid ounces Converter — metric tbsp to fl oz
Convert Metric tablespoon (metric tbsp) to Fluid ounce (fl oz) using the exact conversion factor (1 metric tablespoon = 0.5072103405 fluid ounce). See the formula, worked examples, conversion table, history, and common uses.
Metric tablespoons to Fluid ounces converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
A US fluid ounce is 1/128 of a US gallon.
Result = input x 1.5e-5 / 2.95735296e-5.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Metric tablespoons to Fluid ounces
Metric tablespoon and Fluid ounce appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Specifically: A metric tablespoon is 15 milliliters, and a US fluid ounce is 1/128 of a US gallon.
Formula
fluid ounces = metric tablespoons × 0.507210340528
This factor comes from each unit's defined relationship to the category's base unit: 1 metric tablespoon equals 0.000015 base units, and 1 fluid ounce equals 0.0000295735295625 base units, so dividing one by the other gives the direct metric tablespoon-to-fluid ounce factor of 0.507210340528.
Simple example
1 metric tbsp × 0.5072103405 = 0.5072103405 fl oz
1 metric tablespoon = 0.5072103405 fluid ounces.
Real-world example
10 metric tbsp × 0.5072103405 = 5.072103405 fl oz
10 metric tablespoons = 5.072103405 fluid ounces.
Conversion table
| Metric tablespoon (metric tbsp) | Fluid ounce (fl oz) |
|---|---|
| 1 metric tbsp | 0.5072103405 fl oz |
| 5 metric tbsp | 2.536051703 fl oz |
| 10 metric tbsp | 5.072103405 fl oz |
| 25 metric tbsp | 12.68025851 fl oz |
| 50 metric tbsp | 25.36051703 fl oz |
| 100 metric tbsp | 50.72103405 fl oz |
Reverse conversion: Fluid ounce to Metric tablespoon
0.5072103405 fl oz × 1.971568638 = 0.9999999999 metric tbsp
0.5072103405 fluid ounces = 0.9999999999 metric tablespoons.
metric tablespoons = fluid ounces × 1.9715686375
For a page dedicated to this direction, see Fluid ounce to Metric tablespoon.
Understanding the Metric tablespoon (metric tbsp)
A metric tablespoon is 15 milliliters.
Understanding the Fluid ounce
Fluid ounce (fl oz) measures volume. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. It is classified as a US customary unit.
Where it's used: United States (beverage, nutrition labeling)
Uses of the Fluid ounce today
- US beverage container sizing (soda, water bottles)
- US nutrition and medication dosing labels
History of the Fluid ounce
The US fluid ounce follows from the same English wine-gallon system as the rest of the US liquid volume units, defined as a consistent fraction of the gallon.
Historical origin. Fluid ounce was not the invention of a single named person; it developed through the process described above.
Fluid ounce — sources
- NIST Handbook 44, Appendix C — General tables of units including the US fluid ounce definition.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many fluid ounces are in 1 metric tablespoon?
1 metric tablespoon equals 0.5072103405 fluid ounces, using the exact defined conversion factor rather than an estimate.
How do I convert metric tablespoon to fluid ounce?
Multiply the metric tablespoon value by 0.5072103405. The converter above does this instantly to whatever precision you set.
How do I convert fluid ounce back to metric tablespoon?
Use the reverse factor: 1 fluid ounce equals 1.971568638 metric tablespoons. You can also use the swap control in the converter above to flip the direction instantly.
What is a metric tablespoon?
Metric tablespoon (metric tbsp) is a unit of volume.
What is a fluid ounce?
Fluid ounce (fl oz) measures volume. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. It is classified as a US customary unit.
Is the metric tablespoon to fluid ounce conversion exact?
Yes. The US fluid ounce is 1/128 of a US gallon: exactly 29.5735295625 milliliters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.