A cubic foot is exactly 0.028316846592 cubic meters.
Cubic feet to Imperial fluid ounces Converter — ft3 to imp fl oz
Convert Cubic foot (ft3) to Imperial fluid ounce (imp fl oz) using the exact conversion factor (1 cubic foot = 996.6136734 imperial fluid ounce). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Cubic feet to Imperial 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.
An imperial fluid ounce is 1/160 of an imperial gallon.
Result = input x 0.02831684659 / 2.84130625e-5.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic feet to Imperial fluid ounces
Cubic foot and Imperial 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. Cubic foot is typically associated with united States (construction, HVAC, natural gas billing), while Imperial fluid ounce is typically associated with united Kingdom (historically; less common in current UK retail than metric units).
Formula
imperial fluid ounces = cubic feet × 996.613673447
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot equals 0.028316846592 base units, and 1 imperial fluid ounce equals 0.0000284130625 base units, so dividing one by the other gives the direct cubic foot-to-imperial fluid ounce factor of 996.613673447.
Simple example
1 ft3 × 996.6136734 = 996.6136734 imp fl oz
1 cubic foot = 996.6136734 imperial fluid ounces.
Real-world example
10 ft3 × 996.6136734 = 9,966.136734 imp fl oz
10 cubic feet = 9,966.136734 imperial fluid ounces.
Conversion table
| Cubic foot (ft3) | Imperial fluid ounce (imp fl oz) |
|---|---|
| 1 ft3 | 996.6136734 imp fl oz |
| 5 ft3 | 4,983.068367 imp fl oz |
| 10 ft3 | 9,966.136734 imp fl oz |
| 25 ft3 | 24,915.34184 imp fl oz |
| 50 ft3 | 49,830.68367 imp fl oz |
| 100 ft3 | 99,661.36734 imp fl oz |
Reverse conversion: Imperial fluid ounce to Cubic foot
996.6136734 imp fl oz × 0.001003397833 = 1 ft3
996.6136734 imperial fluid ounces = 1 cubic feet.
cubic feet = imperial fluid ounces × 0.00100339783272
For a page dedicated to this direction, see Imperial fluid ounce to Cubic foot.
Cubic foot vs. Imperial fluid ounce
| Aspect | Cubic foot | Imperial fluid ounce |
|---|---|---|
| Family | US/imperial customary unit | UK/imperial customary unit |
| Typical use | US natural gas utility billing (often in hundreds or thousands of cubic feet) | UK/Commonwealth beverage measurement in historical or specialized contexts |
| Where it's used | United States (construction, HVAC, natural gas billing) | United Kingdom (historically; less common in current UK retail than metric units) |
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.
Understanding the Imperial fluid ounce
Imperial fluid ounce (imp fl oz) measures volume. The imperial fluid ounce is 1/160 of an imperial gallon: exactly 28.4130625 milliliters — slightly smaller than the US fluid ounce despite the larger imperial gallon, because it divides that gallon into more parts. It is classified as a UK/imperial customary unit.
Where it's used: United Kingdom (historically; less common in current UK retail than metric units)
Imperial fluid ounce vs. US fluid ounce. Confusingly, the imperial fluid ounce (28.41 mL) is slightly smaller than the US fluid ounce (29.57 mL), even though the imperial gallon is larger overall — because the imperial gallon is divided into 160 fluid ounces rather than the US gallon's 128.
Uses of the Imperial fluid ounce today
- UK/Commonwealth beverage measurement in historical or specialized contexts
History of the Imperial fluid ounce
The imperial fluid ounce follows from Britain's 1824 imperial gallon, divided into 160 parts rather than the 128 used in the US system, producing its counterintuitively smaller size relative to the US fluid ounce.
Historical origin. Imperial fluid ounce was not the invention of a single named person; it developed through the process described above.
Cubic foot — sources
- NIST — International yard and pound (1959) — Basis for the modern foot and its derived volume unit.
Imperial fluid ounce — sources
- UK Weights and Measures Act 1824 — Basis for the imperial fluid ounce via the imperial gallon.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial fluid ounces are in 1 cubic foot?
1 cubic foot equals 996.6136734 imperial fluid ounces, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot to imperial fluid ounce?
Multiply the cubic foot value by 996.6136734. The converter above does this instantly to whatever precision you set.
How do I convert imperial fluid ounce back to cubic foot?
Use the reverse factor: 1 imperial fluid ounce equals 0.0010033978 cubic feet. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a imperial fluid ounce?
Imperial fluid ounce (imp fl oz) measures volume. The imperial fluid ounce is 1/160 of an imperial gallon: exactly 28.4130625 milliliters — slightly smaller than the US fluid ounce despite the larger imperial gallon, because it divides that gallon into more parts. It is classified as a UK/imperial customary unit.
Is the cubic foot to imperial fluid ounce conversion exact?
Yes. The imperial fluid ounce is 1/160 of an imperial gallon: exactly 28.4130625 milliliters — slightly smaller than the US fluid ounce despite the larger imperial gallon, because it divides that gallon into more parts. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between imperial fluid ounce vs. us fluid ounce?
Confusingly, the imperial fluid ounce (28.41 mL) is slightly smaller than the US fluid ounce (29.57 mL), even though the imperial gallon is larger overall — because the imperial gallon is divided into 160 fluid ounces rather than the US gallon's 128.
Where is the cubic foot still used today?
United States (construction, HVAC, natural gas billing)