Convert US fluid ounces to cubic inches
1 fl oz = 1.804688 in³. Change the amount below, or read the formula and the reference table further down.
1 US fluid ounce equals
cubic inches
1 fl oz = 1.804688 in³
The formula
US fluid ounces and cubic inches both measure volume from the same zero, so a single multiplier does the job.
in³ = fl oz × 1.8046875
Going the other way? Convert cubic inches to US fluid ounces.
US fluid ounces to cubic inches table
Common values, rounded for reading.
| US fluid ounces (fl oz) | Cubic inches (in³) |
|---|---|
| 1 | 1.8047 |
| 2 | 3.6094 |
| 3 | 5.4141 |
| 4 | 7.2188 |
| 5 | 9.0234 |
| 6 | 10.8281 |
| 7 | 12.6328 |
| 8 | 14.4375 |
| 9 | 16.2422 |
| 10 | 18.0469 |
| 15 | 27.0703 |
| 20 | 36.0938 |
| 25 | 45.1172 |
| 30 | 54.1406 |
| 40 | 72.1875 |
| 50 | 90.2344 |
| 75 | 135.35 |
| 100 | 180.47 |
| 250 | 451.17 |
| 500 | 902.34 |
| 1,000 | 1,804.69 |
Questions people ask
- How many cubic inches are in a US fluid ounce?
- One US fluid ounce equals 1.8046875 cubic inches.
- How do I convert US fluid ounces to cubic inches by hand?
- Multiply the number of US fluid ounces by 1.8046875. For a rough check, 1.8 is close enough for most everyday use.
- What is 1 US fluid ounce in cubic inches?
- 1 US fluid ounce is 1.804688 cubic inches.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.