---
title: "Imperial fluid ounces to US gallons converter"
description: "1 imperial fluid ounce = 0.0075059 US gallons. Conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/imperial-fl-oz-to-gallons/
site: "At One Place"
---

# Imperial fluid ounces to US gallons

**1 imperial fluid ounce in US gallons: 1 imp fl oz = 0.0075059 gal**

gal = imp fl oz × 0.007505937034

To convert imperial fluid ounces to US gallons, multiply by 0.007505937034. The table below gives the values people look up most often, and the converter works for any number.

## Imperial fluid ounces to US gallons table

*Common imperial fluid ounce values converted to US gallons.*

| Imperial fluid ounces | US gallons |
| --- | --- |
| 1 imp fl oz | 0.0075059 |
| 2 imp fl oz | 0.015012 |
| 3 imp fl oz | 0.022518 |
| 4 imp fl oz | 0.030024 |
| 5 imp fl oz | 0.03753 |
| 10 imp fl oz | 0.075059 |
| 15 imp fl oz | 0.11259 |
| 20 imp fl oz | 0.15012 |
| 25 imp fl oz | 0.18765 |
| 30 imp fl oz | 0.22518 |
| 40 imp fl oz | 0.30024 |
| 50 imp fl oz | 0.3753 |
| 75 imp fl oz | 0.56295 |
| 100 imp fl oz | 0.75059 |
| 250 imp fl oz | 1.876484 |
| 500 imp fl oz | 3.752969 |
| 1,000 imp fl oz | 7.505937 |

## How the conversion works

The relationship is gal = imp fl oz × 0.007505937034. 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

### How many US gallons are in one imperial fluid ounce?

One imperial fluid ounce equals 0.0075059 US gallons. gal = imp fl oz × 0.007505937034.

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

Use gal = imp fl oz × 0.007505937034. So 10 imp fl oz is 0.075059 gal.

### How many imperial fluid ounces are in one US gallon?

One US gallon equals 133.2279 imperial fluid ounces, which is the reverse of the conversion above.

### Is there more than one kind of US gallon?

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

## Related pages

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