Convert 1 gallon (liquid) to fluid ounce

1 gal (gallon (liquid)) is equal to 127.99999999999926 fl oz (fluid ounce). To convert from gallon (liquid) to fluid ounce, multiply by 127.99999999999926 or divide by 0.007812500000000045.

• 1 gal × 128 = 128 fl oz
• 1 gal ÷ 0.0078125 = 128 fl oz