A US fluid ounce is 1/128 of a US gallon.
Fluid ounces to Cubic Meters Converter — fl oz to m3
Convert Fluid ounce (fl oz) to Cubic Meter (m3) using the exact conversion factor (1 fluid ounce = 0.0000295735 cubic meter). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Fluid ounces to Cubic Meters 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.
Cubic metric volume unit.
Result = input x 2.95735296e-5 / 1.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounces to Cubic Meters
Fluid ounce and Cubic Meter 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 typically associated with united States (beverage, nutrition labeling), while Cubic Meter is typically associated with standard volume unit worldwide for large-scale measurement (construction, shipping, utilities).
Formula
cubic meters = fluid ounces × 0.0000295735295625
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 cubic meter equals 1 base unit, so dividing one by the other gives the direct fluid ounce-to-cubic meter factor of 0.0000295735295625.
Simple example
1 fl oz × 0.00002957352956 = 0.0000295735 m3
1 fluid ounce = 0.0000295735 cubic meters.
Real-world example
10 fl oz × 0.00002957352956 = 0.0002957353 m3
10 fluid ounces = 0.0002957353 cubic meters.
Conversion table
| Fluid ounce (fl oz) | Cubic Meter (m3) |
|---|---|
| 1 fl oz | 0.0000295735 m3 |
| 5 fl oz | 0.0001478676 m3 |
| 10 fl oz | 0.0002957353 m3 |
| 25 fl oz | 0.0007393382 m3 |
| 50 fl oz | 0.0014786765 m3 |
| 100 fl oz | 0.002957353 m3 |
Reverse conversion: Cubic Meter to Fluid ounce
0.0000295735 m3 × 33814.0227 = 0.9999990004 fl oz
0.0000295735 cubic meters = 0.9999990004 fluid ounces.
fluid ounces = cubic meters × 33814.0227018
For a page dedicated to this direction, see Cubic Meter to Fluid ounce.
Fluid ounce vs. Cubic Meter
| Aspect | Fluid ounce | Cubic Meter |
|---|---|---|
| Family | US customary unit | SI derived unit |
| Typical use | US beverage container sizing (soda, water bottles) | Concrete, excavation, and construction material volume |
| Where it's used | United States (beverage, nutrition labeling) | Standard volume unit worldwide for large-scale measurement (construction, shipping, utilities) |
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 Cubic Meter
Cubic Meter (m3) measures volume. The cubic meter is the SI derived unit of volume: the volume of a cube with 1-meter sides. It is classified as a SI derived unit.
Where it's used: Standard volume unit worldwide for large-scale measurement (construction, shipping, utilities)
Uses of the Cubic Meter today
- Concrete, excavation, and construction material volume
- Natural gas and water utility billing in many countries
- Shipping container and freight volume measurement
History of the Cubic Meter
Like the square meter, the cubic meter is a coherent SI derived unit that follows automatically from the meter rather than having an independent origin story of its own.
Historical origin. Cubic Meter 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.
Cubic Meter — sources
- BIPM SI Brochure — Coherent derived units — Defines the cubic meter as the SI unit of volume.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic meters are in 1 fluid ounce?
1 fluid ounce equals 0.0000295735 cubic meters, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce to cubic meter?
Multiply the fluid ounce value by 0.00002957352956. The converter above does this instantly to whatever precision you set.
How do I convert cubic meter back to fluid ounce?
Use the reverse factor: 1 cubic meter equals 33,814.0227 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 cubic meter?
Cubic Meter (m3) measures volume. The cubic meter is the SI derived unit of volume: the volume of a cube with 1-meter sides. It is classified as a SI derived unit.
Is the fluid ounce to cubic meter 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)