---
title: "5 fl oz to gal = 0.039063 gal"
description: "5 US fluid ounces is 0.039063 US gallons. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/5-fl-oz-to-gallons/
site: "At One Place"
---

# 5 fl oz to gal

**5 US fluid ounces in US gallons: 5 fl oz = 0.039063 gal**

gal = fl oz × 0.0078125

5 US fluid ounces is 0.039063 US gallons. To get there, multiply by 0.0078125.

## Values either side

*US fluid ounces near 5, converted to US gallons.*

| US fluid ounces | US gallons |
| --- | --- |
| 2 fl oz | 0.015625 |
| 2.5 fl oz | 0.019531 |
| 3 fl oz | 0.023438 |
| 4 fl oz | 0.03125 |
| 5 fl oz ← | 0.039063 |
| 6 fl oz | 0.046875 |
| 7 fl oz | 0.054688 |
| 8 fl oz | 0.0625 |
| 9 fl oz | 0.070313 |

## How the conversion works

The relationship is gal = fl oz × 0.0078125. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> US gallon: US liquid gallon. The imperial gallon is about 20% larger.

## Common questions

### What is 5 fl oz in US gallons?

5 fl oz is 0.039063 gal.

### How do you convert US fluid ounces to US gallons?

Multiply by 0.0078125.

## Related pages

- [US fluid ounces to US gallons](https://atoneplace.net/convert/fl-oz-to-gallons/)
- [5 gal to fl oz](https://atoneplace.net/convert/5-gallons-to-fl-oz/)
- [2 fl oz to gal](https://atoneplace.net/convert/2-fl-oz-to-gallons/)
- [2.5 fl oz to gal](https://atoneplace.net/convert/2-5-fl-oz-to-gallons/)
- [3 fl oz to gal](https://atoneplace.net/convert/3-fl-oz-to-gallons/)
- [4 fl oz to gal](https://atoneplace.net/convert/4-fl-oz-to-gallons/)
- [6 fl oz to gal](https://atoneplace.net/convert/6-fl-oz-to-gallons/)
- [7 fl oz to gal](https://atoneplace.net/convert/7-fl-oz-to-gallons/)
- [8 fl oz to gal](https://atoneplace.net/convert/8-fl-oz-to-gallons/)
- [9 fl oz to gal](https://atoneplace.net/convert/9-fl-oz-to-gallons/)

## 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/)