A US fluid ounce is 1/128 of a US gallon.
Fluid ounces to Decaliters Converter — fl oz to daL
Convert Fluid ounce (fl oz) to Decaliter (daL) using the exact conversion factor (1 fluid ounce = 0.002957353 decaliter). See the formula, worked examples, conversion table, history, and common uses.
Fluid ounces to Decaliters 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.
Decaliter is 10 liter units.
Result = input x 2.95735296e-5 / 0.01.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounces to Decaliters
Fluid ounce and Decaliter 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
decaliters = fluid ounces × 0.00295735295625
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 decaliter equals 0.01 base units, so dividing one by the other gives the direct fluid ounce-to-decaliter factor of 0.00295735295625.
Simple example
1 fl oz × 0.002957352956 = 0.002957353 daL
1 fluid ounce = 0.002957353 decaliters.
Real-world example
10 fl oz × 0.002957352956 = 0.0295735296 daL
10 fluid ounces = 0.0295735296 decaliters.
Conversion table
| Fluid ounce (fl oz) | Decaliter (daL) |
|---|---|
| 1 fl oz | 0.002957353 daL |
| 5 fl oz | 0.0147867648 daL |
| 10 fl oz | 0.0295735296 daL |
| 25 fl oz | 0.0739338239 daL |
| 50 fl oz | 0.1478676478 daL |
| 100 fl oz | 0.2957352956 daL |
Reverse conversion: Decaliter to Fluid ounce
0.002957353 daL × 338.140227 = 1.000000015 fl oz
0.002957353 decaliters = 1.000000015 fluid ounces.
fluid ounces = decaliters × 338.140227018
For a page dedicated to this direction, see Decaliter 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 Decaliter (daL)
Decaliter is 10 liter units.
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 decaliters are in 1 fluid ounce?
1 fluid ounce equals 0.002957353 decaliters, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce to decaliter?
Multiply the fluid ounce value by 0.002957352956. The converter above does this instantly to whatever precision you set.
How do I convert decaliter back to fluid ounce?
Use the reverse factor: 1 decaliter equals 338.140227 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 decaliter?
Decaliter (daL) is a unit of volume.
Is the fluid ounce to decaliter 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)