Gallon (US) to Fluid Ounce (US) Converter

Quick Answer

1 gal = 128 fl oz

Formula: Fluid Ounce (US) = Gallon (US) x 128

Formula verifiedLive calculation

From (Gallon (US))gal

To (Fluid Ounce (US))

128fl oz

Quick values

Gallon (US) to Fluid Ounce (US) Conversion Table

Gallon (US) (gal)	Fluid Ounce (US) (fl oz)	Formula Step
1	128	1 x 128
2	256	2 x 128
3	384	3 x 128
4	512	4 x 128
5	640	5 x 128
6	768	6 x 128
7	896	7 x 128
8	1024	8 x 128
9	1152	9 x 128
10	1280	10 x 128

Convert Gallon (US) to Other Culinary Volume Units

Gallon (US) to Teaspoon (US)Gallon (US) to Teaspoon (UK)Gallon (US) to Tablespoon (US)Gallon (US) to Tablespoon (UK)Gallon (US) to Sho (Japanese)Gallon (US) to Shaku (Japanese)Gallon (US) to Quart (US)Gallon (US) to Pint (US)Gallon (US) to Milliliter Gallon (US) to Liter Gallon (US) to Fluid Ounce (US)Gallon (US) to Fluid Ounce (UK)Gallon (US) to Deciliter Gallon (US) to Cup (US)Gallon (US) to Cup (New Zealand)Gallon (US) to Cup (Metric)Gallon (US) to Cup (Australian)Gallon (US) to Centiliter

Frequently Asked Questions

How do you convert Gallon (US) to Fluid Ounce (US)?

Use the formula Fluid Ounce (US) = Gallon (US) x 128. For example: 1 gal = 128 fl oz. Our calculator handles this automatically.

How many Fluid Ounce (US)s in a Gallon (US)?

1 gal = 128 fl oz.

Why would I need to convert Gallon (US) to Fluid Ounce (US)?

Converting Gallon (US) to Fluid Ounce (US) is useful for scientific calculations, engineering projects, international trade, and everyday measurements where different unit systems are used.

Culinary Volume reference calculator

Reference factors

128

fl oz per gal

0.0078125

gal per fl oz

Formula audit

Fluid Ounce (US) = Gallon (US) x 128

1 gal = 128 fl oz

Results use the shared conversion engine and retain the full conversion rule before display formatting.

Unit reference

CategoryCulinary Volume

Input unitGallon (US) (gal)

Output unitFluid Ounce (US) (fl oz)