---
title: "US fluid ounces to Cubic inches — fl oz to in³ converter"
description: "1 US fluid ounce = 1.804688 cubic inches. Convert US fluid ounces to cubic inches with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/fl-oz-to-cubic-inches/
site: "At One Place"
---

# US fluid ounces to cubic inches

**1 US fluid ounce in cubic inches: 1 fl oz = 1.804688 in³**

in³ = fl oz × 1.8046875

To convert US fluid ounces to cubic inches, multiply by 1.8046875. The table below gives the values people look up most often, and the converter works for any number.

## US fluid ounces to cubic inches table

*Common US fluid ounce values converted to cubic inches.*

| US fluid ounces | Cubic inches |
| --- | --- |
| 1 fl oz | 1.804688 |
| 2 fl oz | 3.609375 |
| 3 fl oz | 5.414063 |
| 4 fl oz | 7.21875 |
| 5 fl oz | 9.023438 |
| 10 fl oz | 18.04688 |
| 15 fl oz | 27.07031 |
| 20 fl oz | 36.09375 |
| 25 fl oz | 45.11719 |
| 30 fl oz | 54.14063 |
| 40 fl oz | 72.1875 |
| 50 fl oz | 90.23438 |
| 75 fl oz | 135.3516 |
| 100 fl oz | 180.4688 |
| 250 fl oz | 451.1719 |
| 500 fl oz | 902.3438 |
| 1,000 fl oz | 1,804.6875 |

## How the conversion works

The relationship is in³ = fl oz × 1.8046875. Both units measure volume, so the conversion is a fixed factor that never changes.

## Common questions

### How many cubic inches are in one US fluid ounce?

One US fluid ounce equals 1.804688 cubic inches. in³ = fl oz × 1.8046875.

### How do you convert US fluid ounces to cubic inches?

Use in³ = fl oz × 1.8046875. So 10 fl oz is 18.04688 in³.

### How many US fluid ounces are in one cubic inch?

One cubic inch equals 0.55411 US fluid ounces, which is the reverse of the conversion above.

## Related pages

- [Cubic inches to US fluid ounces](https://atoneplace.net/convert/cubic-inches-to-fl-oz/)
- [US fluid ounces to Liters](https://atoneplace.net/convert/fl-oz-to-liters/)
- [US fluid ounces to Milliliters](https://atoneplace.net/convert/fl-oz-to-ml/)
- [US fluid ounces to Cubic meters](https://atoneplace.net/convert/fl-oz-to-cubic-meters/)
- [US fluid ounces to US gallons](https://atoneplace.net/convert/fl-oz-to-gallons/)
- [US fluid ounces to US quarts](https://atoneplace.net/convert/fl-oz-to-quarts/)
- [US fluid ounces to US pints](https://atoneplace.net/convert/fl-oz-to-pints/)
- [US fluid ounces to US cups](https://atoneplace.net/convert/fl-oz-to-cups/)
- [US fluid ounces to Tablespoons](https://atoneplace.net/convert/fl-oz-to-tablespoons/)
- [US fluid ounces to Teaspoons](https://atoneplace.net/convert/fl-oz-to-teaspoons/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)