A US fluid ounce is 1/128 of a US gallon.
Fluid ounces to Metric tablespoons Converter — fl oz to metric tbsp
Convert Fluid ounce (fl oz) to Metric tablespoon (metric tbsp) using the exact conversion factor (1 fluid ounce = 1.971568638 metric tablespoon). See the formula, worked examples, conversion table, history, and common uses.
Fluid ounces to Metric tablespoons 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 metric tablespoon is 15 milliliters.
Result = input x 2.95735296e-5 / 1.5e-5.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounces to Metric tablespoons
Fluid ounce and Metric tablespoon 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. Fluid ounce is most often used for us beverage container sizing (soda, water bottles).
Formula
metric tablespoons = fluid ounces × 1.9715686375
This factor comes from each unit's defined relationship to the category's base unit: 1 fluid ounce equals 0.0000295735295625 base units, and 1 metric tablespoon equals 0.000015 base units, so dividing one by the other gives the direct fluid ounce-to-metric tablespoon factor of 1.9715686375.
Simple example
1 fl oz × 1.971568638 = 1.971568638 metric tbsp
1 fluid ounce = 1.971568638 metric tablespoons.
Real-world example
10 fl oz × 1.971568638 = 19.71568638 metric tbsp
10 fluid ounces = 19.71568638 metric tablespoons.
Conversion table
| Fluid ounce (fl oz) | Metric tablespoon (metric tbsp) |
|---|---|
| 1 fl oz | 1.971568638 metric tbsp |
| 5 fl oz | 9.857843188 metric tbsp |
| 10 fl oz | 19.71568638 metric tbsp |
| 25 fl oz | 49.28921594 metric tbsp |
| 50 fl oz | 98.57843188 metric tbsp |
| 100 fl oz | 197.1568638 metric tbsp |
Reverse conversion: Metric tablespoon to Fluid ounce
1.971568638 metric tbsp × 0.5072103405 = 1 fl oz
1.971568638 metric tablespoons = 1 fluid ounces.
fluid ounces = metric tablespoons × 0.507210340528
For a page dedicated to this direction, see Metric tablespoon to Fluid ounce.
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.
Understanding the Metric tablespoon (metric tbsp)
A metric tablespoon is 15 milliliters.
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 metric tablespoons are in 1 fluid ounce?
1 fluid ounce equals 1.971568638 metric tablespoons, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce to metric tablespoon?
Multiply the fluid ounce value by 1.971568638. The converter above does this instantly to whatever precision you set.
How do I convert metric tablespoon back to fluid ounce?
Use the reverse factor: 1 metric tablespoon equals 0.5072103405 fluid ounces. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a metric tablespoon?
Metric tablespoon (metric tbsp) is a unit of volume.
Is the fluid ounce to metric tablespoon 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.
Where is the fluid ounce still used today?
United States (beverage, nutrition labeling)