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VOLUME CONVERTER

US Gallon to Fluid Ounce Converter

Convert US Gallon (gal) to Fluid Ounce (fl oz) instantly. Use the converter below or reference the conversion table.

Quick Answer
1 US Gallon = 127.9979 Fluid Ounce
Formula: Fluid Ounce = US Gallon × 127.9979

US Gallon to Fluid Ounce Converter

1 gal
→
127.9979 fl oz
Open Full Volume Converter →⇄ Fluid Ounce to US Gallon

US Gallon to Fluid Ounce Conversion Table

US Gallon (gal)Fluid Ounce (fl oz)
1 gal127.9979 fl oz
5 gal639.98952 fl oz
10 gal1279.979 fl oz
25 gal3199.9476 fl oz
50 gal6399.8952 fl oz
100 gal12799.79 fl oz
250 gal31999.476 fl oz
500 gal63998.952 fl oz

How to Convert US Gallon to Fluid Ounce

To convert from US Gallon to Fluid Ounce, multiply the value by 127.9979.
Fluid Ounce = US Gallon × 127.9979
Example: Convert 10 US Gallon to Fluid Ounce:
10 gal × 127.9979 = 1279.979 fl oz

Frequently Asked Questions

Q: How many Fluid Ounces are in a US Gallon?
A: 1 US Gallon equals 127.9979 Fluid Ounce. To convert any US Gallon value to Fluid Ounce, multiply by 127.9979.
Q: How do I convert US Gallon to Fluid Ounce?
A: Multiply the US Gallon value by 127.9979 to get the equivalent in Fluid Ounce. Formula: fl oz = gal × 127.9979.
Q: What is the difference between US Gallon and Fluid Ounce?
A: Both are units of volume measurement. 1 US Gallon (gal) = 127.9979 Fluid Ounce (fl oz). US Gallon is the larger unit.
Q: Can I convert Fluid Ounce back to US Gallon?
A: Yes — divide by 127.9979, or use our Fluid Ounce to US Gallon converter. Formula: gal = fl oz ÷ 127.9979.

Other US Gallon Conversions

US Gallon → MilliliterUS Gallon → LiterUS Gallon → US CupUS Gallon → US PintUS Gallon → US QuartUS Gallon → TablespoonUS Gallon → Teaspoon
View all Volume conversions →

All Volume Units

Milliliter (mL)Liter (L)US Cup (cup)Fluid Ounce (fl oz)US Pint (pt)US Quart (qt)US Gallon (gal)Tablespoon (tbsp)Teaspoon (tsp)