Convert Imperial Fluid Ounce to Cubic Inch
Convert imperial fluid ounces to cubic inches instantly. 1 imperial fluid ounce = 1.7338714549 cubic inch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Inch to Imperial Fluid Ounce converter for the reverse conversion.
Units explained
Imperial Fluid Ounce
An imperial fluid ounce is 1/160 of an imperial gallon (28.4131 mL).
Defined so that ten fluid ounces make an imperial half-pint.
Used in UK and Commonwealth recipes and labels.
UK, 1824.
Cubic Inch
A cubic inch is the volume of a cube one inch on a side (16.387 mL).
Derived by cubing the international inch (25.4 mm).
Used for engine displacement and small-part volumes.
1959 yard agreement.
Imperial Fluid Ounce to Cubic Inch conversion formula
The relationship between imperial fluid ounces and cubic inches:
To convert imperial fluid ounces to cubic inches, multiply the value in imperial fluid ounces by 1.7338714549. To reverse, multiply cubic inches by 0.576744024.
How to use this converter
Type a value into the calculator. The result in cubic inches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Inch to Imperial Fluid Ounce converter for the reverse direction.
Step-by-step: convert imperial fluid ounces to cubic inches
- Write down the value in imperial fluid ounces (fl oz).
- Multiply that value by the factor 1.7338714549.
- The product is the equivalent value in cubic inches (in³).
- To reverse, multiply the cubic inch value by 0.576744024.
Worked examples
Example 1 — Convert 1 fl oz to in³:
1 × 1.7338714549 = 1.7338714549 in³
Example 2 — Convert 100 fl oz to in³:
100 × 1.7338714549 = 173.3871454948 in³
Real-world example — Hair-width scale measurements
A 70-imperial fluid ounce measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like cubic inches for direct comparison across supplier datasheets.
70 fl oz × 1.7338714549 = 121.3710018463 in³
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 imperial fluid ounces), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 fl oz × 1.7338714549 = 5.2016143648 in³
Real-world example — Plastic-film thickness alternates
A 150-imperial fluid ounce plastic film converts cleanly to cubic inches — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 fl oz × 1.7338714549 = 260.0807182421 in³
Imperial Fluid Ounce to Cubic Inch conversion table
Standard reference values for converting imperial fluid ounces to cubic inches:
| Imperial Fluid Ounce [fl oz] | Cubic Inch [in³] |
|---|---|
| 0.01 | 0.0173387145 |
| 0.1 | 0.1733871455 |
| 1 | 1.7338714549 |
| 2 | 3.4677429099 |
| 3 | 5.2016143648 |
| 4 | 6.9354858198 |
| 5 | 8.6693572747 |
| 10 | 17.3387145495 |
| 20 | 34.677429099 |
| 30 | 52.0161436484 |
| 40 | 69.3548581979 |
| 50 | 86.6935727474 |
| 100 | 173.3871454948 |
| 500 | 866.9357274738 |
| 1000 | 1733.8714549476 |
Frequently asked questions
How many cubic inches is 1 imperial fluid ounce?
How do I convert imperial fluid ounces to cubic inches?
How do I convert cubic inches back to imperial fluid ounces?
How many cubic inches is 100 imperial fluid ounces?
Popular volume unit conversions
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Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (3 units)
Cubic (length-derived) (3 units)
Sources & references
Conversion factor (1 fl oz = 1.7338714549 in³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.