This converter turns imperial fluid ounces into cubic feet instantly, using the exact factor 1 imperial fluid ounce = 0.001003397833 cubic feet. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The UK fluid ounce, about 4% smaller than its US counterpart. The volume of a one-foot cube — used for shipping, refrigerators and natural gas.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
imperial fluid ounces- The amount you are converting, measured in imperial fluid ounces
0.001003397833- The exact number of cubic feet in one imperial fluid ounce
cubic feet- The converted result
How it works, step by step
- Enter the number of imperial fluid ounces you want to convert.
- The value is multiplied by 0.001003397833, the exact conversion factor.
- The result is displayed in cubic feet, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 imperial fluid ounces
Multiply 5 by 0.0010033978. That gives 0.005017 cubic feet. A quick sanity check: one imperial fluid ounce is smaller than one cubic foot, so the number should get smaller — and it does.
Converting 72 imperial fluid ounces
72 × 0.0010033978 = 0.072245 cubic feet. Working backwards, 0.072245 ÷ 0.0010033978 returns 72 imperial fluid ounces, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many cubic feet are in one imperial fluid ounce?
Exactly 0.001003397833. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert imperial fluid ounces to cubic feet?
Cubic Feet = imperial fluid ounces × 0.001003397833. To reverse it, divide instead: imperial fluid ounces = cubic feet ÷ 0.001003397833, which is the same as multiplying by 996.6136734.
Is the imperial fluid ounce bigger than the cubic foot?
No. One imperial fluid ounce is only 0.0010034 of a cubic foot, so the cubic foot is the larger unit.
Why does my answer differ slightly from other imperial-fluid-ounces to cubic-feet converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a imperial fluid ounce?
The UK fluid ounce, about 4% smaller than its US counterpart.
What is a cubic foot?
The volume of a one-foot cube — used for shipping, refrigerators and natural gas.
Imperial Fluid Ounces to cubic feet reference table
| Imperial Fluid Ounces | Cubic Feet |
|---|---|
| 0.5 fl oz | 0.000502 ft³ |
| 1 fl oz | 0.001003 ft³ |
| 2 fl oz | 0.002007 ft³ |
| 3 fl oz | 0.00301 ft³ |
| 5 fl oz | 0.005017 ft³ |
| 10 fl oz | 0.010034 ft³ |
| 15 fl oz | 0.015051 ft³ |
| 20 fl oz | 0.020068 ft³ |
| 25 fl oz | 0.025085 ft³ |
| 50 fl oz | 0.05017 ft³ |
| 75 fl oz | 0.075255 ft³ |
| 100 fl oz | 0.10034 ft³ |
| 250 fl oz | 0.250849 ft³ |
| 500 fl oz | 0.501699 ft³ |
| 1000 fl oz | 1.0034 ft³ |
Exact factor: 1 imperial fluid ounce = 0.001003397833 cubic feet. Values rounded for display.