1 Ounce to Gallons [liquid]

1 fl oz = 0.0078125 gal

Calculation: gal = 1 fl oz × 0.0078125 = 0.0078125 gal

Ounce to Gallon [liquid] Converter

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How much is 1 fl oz?

30 mL (1.0 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

What does 1 fl oz look like?

Illustration of a small measuring cup
30 mL (1.0 fl oz) is about one US fluid ounce (29.6 mL), about two tablespoons.

1 fl oz on the gallon [liquid] scale

fl oz00.511.52gal00.0020.0040.0060.0080.010.0120.014

1 fl oz = 0.007812 gal

Did you know? One fluid ounce (US) is 30 mL.

1 US fl oz equals 29.57 mL. The Imperial (UK) fluid ounce is slightly smaller at 28.41 mL.

How to Convert Ounce to Gallon [liquid]

1 ounce = 0.0078125 gallons [liquid]

Gallon [liquid] = Ounce × 0.0078125

Example: 1 fl oz × 0.0078125 = 0.0078125 gal

Reverse Conversion

To convert gallons [liquid] back to ounces:

  • Remember, 1 gallon [liquid] equals 128 ounces.
  • To convert 0.0078125 gal to fl oz, multiply 0.0078125 x 128, resulting in 1 fl oz.

1 fl oz is also equal to:

Frequently Asked Questions

How much is 1 ounce in gallons [liquid]?

1 ounce equals 0.0078125 gallons [liquid]. This is calculated by multiplying 1 by the conversion factor 0.0078125.

What does 1 ounce look like in gallons [liquid]?

1 ounce (0.0078125 gallons [liquid]) is a shot glass or a few tablespoons.

How do you calculate 1 ounce to gallons [liquid]?

Multiply 1 by the conversion factor 0.0078125. The calculation is 1 × 0.0078125 = 0.0078125 gallons [liquid]. This factor is defined by international measurement standards.

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1 ounce = 0.0078125 gallons [liquid]
1 ounce = 0.0078125 gallons [liquid] — conversion chart

Nearby Conversions

2 ounces0.01563 gallons [liquid] 3 ounces0.02344 gallons [liquid] 4 ounces0.03125 gallons [liquid] 5 ounces0.03906 gallons [liquid] 6 ounces0.04688 gallons [liquid] 7 ounces0.05469 gallons [liquid] 8 ounces0.0625 gallons [liquid] 9 ounces0.07031 gallons [liquid] 10 ounces0.07813 gallons [liquid] 11 ounces0.08594 gallons [liquid]

For general conversions between ounces and gallons [liquid], see the ounces to gallons [liquid] converter.

Also convert Ounces to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.