Gallons to Imperial Fluid Ounces
Convert gallons (gal) to imperial fluid ounces (imp fl oz). Type in either box; the other updates as you go.
How to convert gallons to imperial fluid ounces
To convert gallons to imperial fluid ounces, multiply the number of gallons by 133.2278695.
Example
Convert 5 gallons to imperial fluid ounces:
Gallon to imperial fluid ounce conversion chart
| Gallons (gal) | Imperial Fluid Ounces (imp fl oz) |
|---|---|
| 1 gal | 133.2279 imp fl oz |
| 2 gal | 266.4557 imp fl oz |
| 3 gal | 399.6836 imp fl oz |
| 4 gal | 532.9115 imp fl oz |
| 5 gal | 666.1393 imp fl oz |
| 6 gal | 799.3672 imp fl oz |
| 7 gal | 932.5951 imp fl oz |
| 8 gal | 1,065.823 imp fl oz |
| 9 gal | 1,199.051 imp fl oz |
| 10 gal | 1,332.279 imp fl oz |
| 12 gal | 1,598.734 imp fl oz |
| 15 gal | 1,998.418 imp fl oz |
| 20 gal | 2,664.557 imp fl oz |
| 25 gal | 3,330.697 imp fl oz |
| 30 gal | 3,996.836 imp fl oz |
| 40 gal | 5,329.115 imp fl oz |
| 50 gal | 6,661.393 imp fl oz |
| 60 gal | 7,993.672 imp fl oz |
| 70 gal | 9,325.951 imp fl oz |
| 75 gal | 9,992.09 imp fl oz |
| 80 gal | 10,658.23 imp fl oz |
| 90 gal | 11,990.51 imp fl oz |
| 100 gal | 13,322.79 imp fl oz |
| 150 gal | 19,984.18 imp fl oz |
| 200 gal | 26,645.57 imp fl oz |
| 250 gal | 33,306.97 imp fl oz |
| 500 gal | 66,613.93 imp fl oz |
| 1,000 gal | 133,227.9 imp fl oz |
Going the other way? See the imperial fluid ounces to gallons chart.
About the units
Gallon (gal)
A US gallon is 231 cubic inches, about 3.785 liters. It is the unit for fuel and milk in the US. The imperial gallon is about 20% larger.
Imperial Fluid Ounce (imp fl oz)
An imperial fluid ounce is about 28.41 milliliters, slightly smaller than a US fluid ounce.
Frequently asked questions
How many imperial fluid ounces are in a gallon?
There are 133.2278695 imperial fluid ounces in a gallon.
How many gallons are in an imperial fluid ounce?
There are 0.007505937034 gallons in an imperial fluid ounce.
How do you convert gallons to imperial fluid ounces?
To convert gallons to imperial fluid ounces, multiply the number of gallons by 133.2278695.
What is 5 gallons in imperial fluid ounces?
5 gallons equals 666.139 imperial fluid ounces.
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