Mendeleev
Science & measurement
Measurement system: US customary → US customary

Convert US liquid gallon (US gal) → US fluid ounce (US fl oz)

1 US gal equals 128 US fl oz. The name of a customary unit matters: US liquid and Imperial units are not interchangeable. US liquid gallon (US gal) is shown explicitly so a reader can recognize the term used in recipes and measuring tools.

Why the distinction matters

US liquid gallon and US fluid ounce belong to measurement conventions that may look familiar but are not always equivalent across countries. Mendeleev.com therefore keeps the system name next to the abbreviation and calculates from defined conversion factors rather than rounded kitchen rules.

Example

1 US gal = 128 US fl oz · 10 US gal = 1 280 US fl oz.

128 US fl oz

Sources