Fluid ounces to Gallons Converter
1 fluid ounce (fl oz) equals 0.0078125 gallons (gal).
Quick answer
- 1 fluid ounce = 0.0078125 gallons
- 1 gallon = 128 fluid ounces
- Formula: gal = fl oz ÷ 128
1 fluid ounce = 0.0078125 gallons
How to convert fluid ounces to gallons
gal = fl oz ÷ 128
To convert fluid ounces to gallons, divide the number of fluid ounces by 128.
Example: 42 fl oz to gal
- Start with the value in fluid ounces: 42 fl oz.
- Divide by 128: 42 ÷ 128 = 0.328125.
- Result: 42 fluid ounces = 0.328125 gallons.
Going the other way, 1 gallon = 128 fluid ounces, so to convert gallons back to fluid ounces you multiply by the same number. See gallons to fluid ounces.
Fluid ounces to gallons conversion table
| Fluid ounces (fl oz) | Gallons (gal) |
|---|---|
| 0.1 fl oz | 0.00078125 gal |
| 0.2 fl oz | 0.0015625 gal |
| 0.3 fl oz | 0.00234375 gal |
| 0.4 fl oz | 0.003125 gal |
| 0.5 fl oz | 0.00390625 gal |
| 0.6 fl oz | 0.0046875 gal |
| 0.7 fl oz | 0.00546875 gal |
| 0.8 fl oz | 0.00625 gal |
| 0.9 fl oz | 0.00703125 gal |
| 1 fl oz | 0.0078125 gal |
| 1.5 fl oz | 0.01171875 gal |
| 2 fl oz | 0.015625 gal |
| 2.5 fl oz | 0.01953125 gal |
| 3 fl oz | 0.0234375 gal |
| 3.5 fl oz | 0.02734375 gal |
| 4 fl oz | 0.03125 gal |
| 4.5 fl oz | 0.03515625 gal |
| 5 fl oz | 0.0390625 gal |
| 6 fl oz | 0.046875 gal |
| 7 fl oz | 0.0546875 gal |
| 7.5 fl oz | 0.05859375 gal |
| 8 fl oz | 0.0625 gal |
| 9 fl oz | 0.0703125 gal |
| 10 fl oz | 0.078125 gal |
| 11 fl oz | 0.0859375 gal |
| 12 fl oz | 0.09375 gal |
| 13 fl oz | 0.1015625 gal |
| 14 fl oz | 0.109375 gal |
| 15 fl oz | 0.1171875 gal |
| 16 fl oz | 0.125 gal |
| 17 fl oz | 0.1328125 gal |
| 18 fl oz | 0.140625 gal |
| 19 fl oz | 0.1484375 gal |
| 20 fl oz | 0.15625 gal |
| 21 fl oz | 0.1640625 gal |
| 22 fl oz | 0.171875 gal |
| 23 fl oz | 0.1796875 gal |
| 24 fl oz | 0.1875 gal |
| 25 fl oz | 0.1953125 gal |
| 26 fl oz | 0.203125 gal |
More fl oz to gal values
- 27 fl oz
- 28 fl oz
- 29 fl oz
- 30 fl oz
- 31 fl oz
- 32 fl oz
- 33 fl oz
- 34 fl oz
- 35 fl oz
- 36 fl oz
- 37 fl oz
- 38 fl oz
- 39 fl oz
- 40 fl oz
- 41 fl oz
- 42 fl oz
- 43 fl oz
- 44 fl oz
- 45 fl oz
- 46 fl oz
- 47 fl oz
- 48 fl oz
- 49 fl oz
- 50 fl oz
- 51 fl oz
- 52 fl oz
- 53 fl oz
- 54 fl oz
- 55 fl oz
- 56 fl oz
- 57 fl oz
- 58 fl oz
- 59 fl oz
- 60 fl oz
- 61 fl oz
- 62 fl oz
- 63 fl oz
- 64 fl oz
- 65 fl oz
- 66 fl oz
- 67 fl oz
- 68 fl oz
- 69 fl oz
- 70 fl oz
- 71 fl oz
- 72 fl oz
- 73 fl oz
- 74 fl oz
- 75 fl oz
- 76 fl oz
- 77 fl oz
- 78 fl oz
- 79 fl oz
- 80 fl oz
- 81 fl oz
- 82 fl oz
- 83 fl oz
- 84 fl oz
- 85 fl oz
- 86 fl oz
- 87 fl oz
- 88 fl oz
- 89 fl oz
- 90 fl oz
- 91 fl oz
- 92 fl oz
- 93 fl oz
- 94 fl oz
- 95 fl oz
- 96 fl oz
- 97 fl oz
- 98 fl oz
- 99 fl oz
- 100 fl oz
- 110 fl oz
- 120 fl oz
- 130 fl oz
- 140 fl oz
- 150 fl oz
- 160 fl oz
- 170 fl oz
- 180 fl oz
- 190 fl oz
- 200 fl oz
- 210 fl oz
- 220 fl oz
- 230 fl oz
- 240 fl oz
- 250 fl oz
- 260 fl oz
- 270 fl oz
- 280 fl oz
- 290 fl oz
- 300 fl oz
- 310 fl oz
- 320 fl oz
- 330 fl oz
- 340 fl oz
- 350 fl oz
- 360 fl oz
- 370 fl oz
- 380 fl oz
- 390 fl oz
- 400 fl oz
- 410 fl oz
- 420 fl oz
- 430 fl oz
- 440 fl oz
- 450 fl oz
- 460 fl oz
- 470 fl oz
- 480 fl oz
- 490 fl oz
- 500 fl oz
- 600 fl oz
- 700 fl oz
- 800 fl oz
- 900 fl oz
- 1,000 fl oz
- 1,200 fl oz
- 1,500 fl oz
- 2,000 fl oz
- 2,500 fl oz
- 3,000 fl oz
- 4,000 fl oz
- 5,000 fl oz
- 10,000 fl oz
What is a fluid ounce?
The US fluid ounce is a unit of volume equal to 1/128 of a US gallon, about 29.57 mL.
What is a gallon?
The US gallon is the unit used in the United States for gasoline, milk and other liquids.
Convert fluid ounces to other units
Convert other units to gallons
Frequently asked questions
How many gallons are in a fluid ounce?
One fluid ounce is 0.0078125 gallons.
How many fluid ounces are in a gallon?
One gallon is 128 fluid ounces.
What is the formula to convert fluid ounces to gallons?
gal = fl oz ÷ 128.