A US fluid ounce is 1/128 of a US gallon.
Fluid ounces to Cubic feet Converter — fl oz to ft3
Convert Fluid ounce (fl oz) to Cubic foot (ft3) using the exact conversion factor (1 fluid ounce = 0.0010443793 cubic foot). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Fluid ounces to Cubic feet 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 cubic foot is exactly 0.028316846592 cubic meters.
Result = input x 2.95735296e-5 / 0.02831684659.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Fluid ounces to Cubic feet
Fluid ounce and Cubic foot 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 foot is typically associated with united States (construction, HVAC, natural gas billing).
Formula
cubic feet = fluid ounces × 0.00104437934028
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 foot equals 0.028316846592 base units, so dividing one by the other gives the direct fluid ounce-to-cubic foot factor of 0.00104437934028.
Simple example
1 fl oz × 0.00104437934 = 0.0010443793 ft3
1 fluid ounce = 0.0010443793 cubic feet.
Real-world example
10 fl oz × 0.00104437934 = 0.0104437934 ft3
10 fluid ounces = 0.0104437934 cubic feet.
Conversion table
| Fluid ounce (fl oz) | Cubic foot (ft3) |
|---|---|
| 1 fl oz | 0.0010443793 ft3 |
| 5 fl oz | 0.0052218967 ft3 |
| 10 fl oz | 0.0104437934 ft3 |
| 25 fl oz | 0.0261094835 ft3 |
| 50 fl oz | 0.052218967 ft3 |
| 100 fl oz | 0.104437934 ft3 |
Reverse conversion: Cubic foot to Fluid ounce
0.0010443793 ft3 × 957.5064935 = 0.9999999614 fl oz
0.0010443793 cubic feet = 0.9999999614 fluid ounces.
fluid ounces = cubic feet × 957.506493506
For a page dedicated to this direction, see Cubic foot to Fluid ounce.
Fluid ounce vs. Cubic foot
| Aspect | Fluid ounce | Cubic foot |
|---|---|---|
| Family | US customary unit | US/imperial customary unit |
| Typical use | US beverage container sizing (soda, water bottles) | US natural gas utility billing (often in hundreds or thousands of cubic feet) |
| Where it's used | United States (beverage, nutrition labeling) | United States (construction, HVAC, natural gas billing) |
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 foot
Cubic foot (ft3) measures volume. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. It is classified as a US/imperial customary unit.
Where it's used: United States (construction, HVAC, natural gas billing)
Uses of the Cubic foot today
- US natural gas utility billing (often in hundreds or thousands of cubic feet)
- HVAC airflow and building-volume calculations
- Lumber, concrete, and construction material estimation in the US
History of the Cubic foot
The cubic foot, like the square foot, follows from the standardized foot (exactly 0.3048 m since the 1959 international agreement) rather than having a separate historical definition.
Historical origin. Cubic foot 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 foot — sources
- NIST — International yard and pound (1959) — Basis for the modern foot and its derived volume unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic feet are in 1 fluid ounce?
1 fluid ounce equals 0.0010443793 cubic feet, using the exact defined conversion factor rather than an estimate.
How do I convert fluid ounce to cubic foot?
Multiply the fluid ounce value by 0.00104437934. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot back to fluid ounce?
Use the reverse factor: 1 cubic foot equals 957.5064935 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 foot?
Cubic foot (ft3) measures volume. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. It is classified as a US/imperial customary unit.
Is the fluid ounce to cubic foot conversion exact?
Yes. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. 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)