How do you convert us fluid ounces to us gallons?

To convert us fluid ounces to us gallons, multiply by 0.0078125. For example, 40 fl oz is 0.3125 gal.

How many us gallons are in a us fluid ounce?

There are 0.0078125 us gallons in one us fluid ounce.

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Converters · Volume

40 US fluid ounces to US gallons

40 fl oz =

0.3125 gal

40 us fluid ounces equals 0.3125 us gallons

How to convert us fluid ounces to us gallons

To get us gallons, multiply by 0.0078125.

gal = fl oz × 0.0078125

Worked example: 40 × 0.0078125 = 0.3125 gal.

Going the other way, multiply by 128 — one us gallon is 128 us fluid ounces.

Values near 40 fl oz

US fluid ounce	US gallon
20 fl oz	0.15625 gal
38 fl oz	0.296875 gal
39 fl oz	0.304688 gal
41 fl oz	0.320312 gal
42 fl oz	0.328125 gal
80 fl oz	0.625 gal

US fluid ounce to US gallon — common values

US fluid ounce	US gallon
1 fl oz	0.007812 gal
2 fl oz	0.015625 gal
3 fl oz	0.023437 gal
5 fl oz	0.039062 gal
10 fl oz	0.078125 gal
25 fl oz	0.195312 gal
50 fl oz	0.390625 gal
100 fl oz	0.78125 gal

Convert US fluid ounce to other units

fl oz → L fl oz → mL fl oz → m³ fl oz → gal fl oz → qt fl oz → pt fl oz → cup fl oz → tbsp fl oz → tsp

← Reverse: US gallon to US fluid ounce

Questions

How do you convert us fluid ounces to us gallons?: To convert us fluid ounces to us gallons, multiply by 0.0078125. For example, 40 fl oz is 0.3125 gal.
How many us gallons are in a us fluid ounce?: There are 0.0078125 us gallons in one us fluid ounce.
How do you convert us gallons back to us fluid ounces?: Go the other way: multiply by 128. One us gallon is 128 us fluid ounces.

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