---
title: "300 gal to fl oz = 38,400 fl oz"
description: "300 US gallons is 38,400 US fluid ounces. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/300-gallons-to-fl-oz/
site: "At One Place"
---

# 300 gal to fl oz

**300 US gallons in US fluid ounces: 300 gal = 38,400 fl oz**

fl oz = gal × 128

300 US gallons is 38,400 US fluid ounces. To get there, multiply by 128.

## Values either side

*US gallons near 300, converted to US fluid ounces.*

| US gallons | US fluid ounces |
| --- | --- |
| 180 gal | 23,040 |
| 200 gal | 25,600 |
| 212 gal | 27,136 |
| 250 gal | 32,000 |
| 300 gal ← | 38,400 |
| 350 gal | 44,800 |
| 400 gal | 51,200 |
| 500 gal | 64,000 |
| 750 gal | 96,000 |

## How the conversion works

The relationship is fl oz = gal × 128. 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 300 gal in US fluid ounces?

300 gal is 38,400 fl oz.

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

Multiply by 128.

## Related pages

- [US gallons to US fluid ounces](https://atoneplace.net/convert/gallons-to-fl-oz/)
- [300 fl oz to gal](https://atoneplace.net/convert/300-fl-oz-to-gallons/)
- [180 gal to fl oz](https://atoneplace.net/convert/180-gallons-to-fl-oz/)
- [200 gal to fl oz](https://atoneplace.net/convert/200-gallons-to-fl-oz/)
- [212 gal to fl oz](https://atoneplace.net/convert/212-gallons-to-fl-oz/)
- [250 gal to fl oz](https://atoneplace.net/convert/250-gallons-to-fl-oz/)
- [350 gal to fl oz](https://atoneplace.net/convert/350-gallons-to-fl-oz/)
- [400 gal to fl oz](https://atoneplace.net/convert/400-gallons-to-fl-oz/)
- [500 gal to fl oz](https://atoneplace.net/convert/500-gallons-to-fl-oz/)
- [750 gal to fl oz](https://atoneplace.net/convert/750-gallons-to-fl-oz/)

## 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/)