---
title: "Cubic inches to US fluid ounces — in³ to fl oz converter"
description: "1 cubic inch = 0.55411 US fluid ounces. Convert cubic inches to US fluid ounces with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/cubic-inches-to-fl-oz/
site: "At One Place"
---

# Cubic inches to US fluid ounces

**1 cubic inch in US fluid ounces: 1 in³ = 0.55411 fl oz**

fl oz = in³ × 0.5541125541

To convert cubic inches to US fluid ounces, multiply by 0.5541125541. The table below gives the values people look up most often, and the converter works for any number.

## Cubic inches to US fluid ounces table

*Common cubic inch values converted to US fluid ounces.*

| Cubic inches | US fluid ounces |
| --- | --- |
| 1 in³ | 0.55411 |
| 2 in³ | 1.108225 |
| 3 in³ | 1.662338 |
| 4 in³ | 2.21645 |
| 5 in³ | 2.770563 |
| 10 in³ | 5.541126 |
| 15 in³ | 8.311688 |
| 20 in³ | 11.08225 |
| 25 in³ | 13.85281 |
| 30 in³ | 16.62338 |
| 40 in³ | 22.1645 |
| 50 in³ | 27.70563 |
| 75 in³ | 41.55844 |
| 100 in³ | 55.41126 |
| 250 in³ | 138.5281 |
| 500 in³ | 277.0563 |
| 1,000 in³ | 554.1126 |

## How the conversion works

The relationship is fl oz = in³ × 0.5541125541. Both units measure volume, so the conversion is a fixed factor that never changes.

## Common questions

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

One cubic inch equals 0.55411 US fluid ounces. fl oz = in³ × 0.5541125541.

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

Use fl oz = in³ × 0.5541125541. So 10 in³ is 5.541126 fl oz.

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

One US fluid ounce equals 1.804688 cubic inches, which is the reverse of the conversion above.

## Related pages

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