Convert Gallons (gal) to Fluid ounce (fl oz)
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Updated on September 1, 2025
You can use our Gallons (gal) to Fluid ounce (fl oz) conversion calculator as a reliable and efficient tool to simplify volume conversions. It is designed for professionals, students, and anyone who needs a quick and accurate result. Conversion of Gallons (gal) to Fluid ounce (fl oz) is crucial in Fuel measurement related measurements. You can avoid the risk of manual calculation errors and save valuable time using our Gallons (gal) to Fluid ounce (fl oz) converter.About Gallons (gal) to Fluid ounce (fl oz) Conversion Calculator
Written By
Nadiba Rahman
Reviewed by
Mrinmoy Roy
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Relation Between Gallons (gal) and Fluid ounce (fl oz)
Let me explain to you about the relation between Gallons gal and Fluid ounce (fl oz) first before moving to the conversion process. Because it’s essential to grasp what these units represent.What is Gallons (gal)?
A gallon is a unit of volume commonly used in the US and UK, varying by measurement system. Gallons (gal) is a unit of volume measurement which is commonly used in Fuel measurement. 1 US gallon = approximately 3.785 liters, while 1 UK gallon = approximately 4.546 liters. Widely used for fuel, water, and other liquid capacities. Highlights significant differences between US and imperial systems..What is Fluid ounce (fl oz)?
Gallons (gal) is another unit of volume measurement that is used in Beverage serving. A fluid ounce is a unit of volume equal to 1/16 of a pint in the US or 1/20 of a pint in the UK.. 1 US gallon = approximately 3.785 liters, while 1 UK gallon = approximately 4.546 liters. Widely used for fuel, water, and other liquid capacities. Highlights significant differences between US and imperial systems..How to Convert Fluid ounce (fl oz)?
The conversion between Gallons (gal) and Fluid ounce (fl oz) follows a simple formula:Gallons = Gallons × 128.000067628113
Where, 128.000067628113 is the value that allows you to convert between Gallons (gal) and Fluid ounce (fl oz).
So,
1 Fluid ounce = 128.000067628113 Gallons
And, 1 Gallons = 1/128.000067628113 Fluid ounce
Examples of Converting Gallons (gal) to Fluid ounce (fl oz)
To convert any value from Gallons (gal) to Fluid ounce (fl oz), simply multiply the amount of Gallons (gal) by the conversion factor:1 Fluid ounce = 128.000067628113 Gallons
For example, if you want to convert 5 Gallons into Fluid ounce and the conversion factor is 128.000067628113, then:
5 Gallons = 5 x 128.000067628113 Fluid ounce
Gallons (gal) to Fluid ounce (fl oz) Conversion Chart
Here’s a quick reference chart for common conversions between Gallons (gal) and Fluid ounce (fl oz)| Gallons (gal) | Fluid ounce (fl oz) |
|---|---|
| 5 Gallons (gal) | 640.000338140565 Fluid ounce (fl oz) |
| 10 Gallons (gal) | 1280.00067628113 Fluid ounce (fl oz) |
| 15 Gallons (gal) | 1920.001014421695 Fluid ounce (fl oz) |
| 20 Gallons (gal) | 2560.00135256226 Fluid ounce (fl oz) |
| 25 Gallons (gal) | 3200.001690702825 Fluid ounce (fl oz) |
| 30 Gallons (gal) | 3840.00202884339 Fluid ounce (fl oz) |
| 35 Gallons (gal) | 4480.002366983955 Fluid ounce (fl oz) |
| 40 Gallons (gal) | 5120.00270512452 Fluid ounce (fl oz) |
| 45 Gallons (gal) | 5760.003043265085 Fluid ounce (fl oz) |
| 50 Gallons (gal) | 6400.00338140565 Fluid ounce (fl oz) |
How 1 Gallons (gal) Converts to Other volume Units
See the relation between Gallons (gal) and other volume related measurement units:| 1 Gallons(gal) | 0.000003 Acre foot (AF) |
| 1 Gallons(gal) | 0.023810 Barrels (bbl) |
| 1 Gallons(gal) | 0.107421 Bushels (bu) |
| 1 Gallons(gal) | 378.541000 Centiliters (cL) |
| 1 Gallons(gal) | 3785.410000 Cubic centimeters (cm³) |
| 1 Gallons(gal) | 3.785410 Cubic decimeters (dm³) |
| 1 Gallons(gal) | 0.133681 Cubic feet (ft³) |
| 1 Gallons(gal) | 230.999384 Cubic inches (in³) |
| 1 Gallons(gal) | 0.000000 Cubic kilometers (km³) |
| 1 Gallons(gal) | 0.003785 Cubic meters (m³) |
| 1 Gallons(gal) | 0.000000 Cubic miles (mi³) |
| 1 Gallons(gal) | 3785410.000000 Cubic millimeters (mm³) |
| 1 Gallons(gal) | 0.004951 Cubic yard (yd³) |
| 1 Gallons(gal) | 16.000008 Cups (cup) |
| 1 Gallons(gal) | 37.854100 Deciliters (dL) |
| 1 Gallons(gal) | 1023.997078 Dram (dr) |
| 1 Gallons(gal) | 32.000017 Gill (gi) |
| 1 Gallons(gal) | 0.003785 Kiloliters (kL) |
| 1 Gallons(gal) | 3.785410 Liters (L) |
| 1 Gallons(gal) | 3785410.000000 Microliters (µL) |
| 1 Gallons(gal) | 3785.410000 Milliliters (mL) |
| 1 Gallons(gal) | 3785409999999.999512 Nanoliters (nL) |
| 1 Gallons(gal) | 3785409999999999.500000 Picoliters (pL) |
| 1 Gallons(gal) | 8.000004 Pints (pt) |
| 1 Gallons(gal) | 3.999998 Quarts (qt) |
| 1 Gallons(gal) | 255.999270 Tablespoons (tbsp) |
| 1 Gallons(gal) | 767.999886 Teaspoons (tsp) |
Features of Our Gallons (gal) to Fluid ounce (fl oz) Conversion Calculator
Our Gallons gal to Fluid ounce (fl oz) converter is more than just a basic converter. Here's what makes it stand out:Output Precision Control
You can control how precise your conversion results are. From settings, you can adjust decimal places from 0 to 12 places.Customizable Rounding Options
You can control the output rounding options based on your necessity. You can turn the rounding mode on or off, and select between Ceiling or Floor rounding to match your needs.Multiple Number Formats
Display your results the way you want:- Standard format (e.g. 12.345245)
- Scientific notation (e.g. 1.23452e+1)
- Engineering format (e.g. 1.23452 × 10^1)