Online calculator to convert US gallons to US fluid ounces (US gal to US fl oz) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Volume units.
Conversion Calculator
Conversion CalculatorEnter your value in the conversion calculator below.
Convert US gallons to US fl oz
TIP: If the result of your conversion is 0, try increasing the "Decimals".
How to convert US gallons to US fl oz: Enter a value in the US gal field and click on the "Calculate US fluid ounces" button. Your answer will appear in the US fl oz field.
Conversion Definitions
The following is a list of definitions relating to conversions between US gallons and US fluid ounces.
What is a US gallon (US gal)?
A US gallon is a unit of volume in US Customary Units. The symbol for US gallon is US gal. There are 0.0078125 US gallons in a US fluid ounce.
What is a US fluid ounce (US fl oz)?
A US fluid ounce is a unit of volume in US Customary Units. The symbol for US fluid ounce is US fl oz. There are 128 US fluid ounces in a US gallon.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from US gal to US fl oz is:
US fl oz = US gal x 128
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from US gallons to US fluid ounces (US gal to US fl oz).
US Gallon to US Fluid Ounce Conversion Example
Task: Convert 8 US gallons to US fluid ounces (show work)Formula:US gal x 128 = US fl ozCalculations:8 US gal x 128 = 1,024 US fl ozResult:8 US gal is equal to 1,024 US fl oz
Conversion Table
Conversion TableFor quick reference purposes, below is a conversion table that you can use to convert from US gal to US fl oz.
US Gallons to US Fluid Ounces Conversion Chart
| US gallons (US gal) | US fluid ounces (US fl oz) |
|---|---|
| 1 US gal | 128 US fl oz |
| 2 US gal | 256 US fl oz |
| 3 US gal | 384 US fl oz |
| 4 US gal | 512 US fl oz |
| 5 US gal | 640 US fl oz |
| 6 US gal | 768 US fl oz |
| 7 US gal | 896 US fl oz |
| 8 US gal | 1,024 US fl oz |
| 9 US gal | 1,152 US fl oz |
| 10 US gal | 1,280 US fl oz |
| 20 US gal | 2,560 US fl oz |
| 30 US gal | 3,840 US fl oz |
| 40 US gal | 5,120 US fl oz |
| 50 US gal | 6,400 US fl oz |
| 75 US gal | 9,600 US fl oz |
| 100 US gal | 12,800 US fl oz |
| 250 US gal | 32,000 US fl oz |
| 500 US gal | 64,000 US fl oz |
| 750 US gal | 96,000 US fl oz |
| 1,000 US gal | 128,000 US fl oz |
| 2,500 US gal | 320,000 US fl oz |
| 5,000 US gal | 640,000 US fl oz |
| 7,500 US gal | 960,000 US fl oz |
| 10,000 US gal | 1,280,000 US fl oz |
| 25,000 US gal | 3,200,000 US fl oz |
| 50,000 US gal | 6,400,000 US fl oz |
| 75,000 US gal | 9,600,000 US fl oz |
| 100,000 US gal | 12,800,000 US fl oz |
| 250,000 US gal | 32,000,000 US fl oz |
Related Units
The following tables provide a summary of the Volume units (both Fluid Volume units and Cubic Volume units) within their respective measurement systems.
Fluid Volume Units
| Unit | Symbol | Measurement System | Description |
|---|---|---|---|
| US teaspoons | US tsp | US Customary Units | 6 US tsp = 1 US fl oz |
| US tablespoons | US tbsp | US Customary Units | 1 US tbsp = 3 US tsp |
| US fluid ounces | US fl oz | US Customary Units | 1 US fl oz = 2 US tbsp |
| US cups | US cup | US Customary Units | 1 US cup = 8 US fl oz |
| US pints | US pt | US Customary Units | 1 US pint = 2 US cups |
| US quarts | US qt | US Customary Units | 1 US quart = 2 US pints |
| US gallons | US gal | US Customary Units | 1 US gallon = 128 US fl oz |
| Imperial teaspoons | Imperial tsp | Imperial System | 4.8 Imp tsp = 1 Imp fl oz |
| Imperial tablespoons | Imperial tbsp | Imperial System | 1 Imp tbsp = 3 Imp tsp |
| Imperial fluid ounces | Imperial fl oz | Imperial System | 1 Imp fl oz = 1.6 Imp tbsp |
| Imperial pints | Imperial pt | Imperial System | 1 Imp pint = 20 Imp fl oz |
| Imperial quarts | Imperial qt | Imperial System | 1 Imp quart = 2 Imp pints |
| Imperial gallons | Imperial gal | Imperial System | 1 Imp gallon = 160 Imp fl oz |
| nanoliters | nL | Metric System | 1 L = 1,000,000,000 nL |
| microliters | μL | Metric System | 1 L = 1,000,000 μL |
| milliliters | mL | Metric System | 1 L = 1,000 mL |
| centiliters | cL | Metric System | 1 L = 100 cL |
| deciliters | dL | Metric System | 1 L = 10 dL |
| liters | L | Metric System | base unit |
| decaliters | daL | Metric System | 10 L = 1 daL |
| hectoliters | hL | Metric System | 100 L = 1 hL |
| kiloliters | kL | Metric System | 1,000 L = 1 kL |
| megaliters | ML | Metric System | 1,000,000 L = 1 ML |
Note: There is a difference between US Customary Units and the Imperial System for volume conversions. The US gallon contains 128 US fluid ounces, whereas the Imperial gallon contains 160 Imperial fluid ounces.
Cubic Volume Units
| Unit | Symbol | Measurement System | Description |
|---|---|---|---|
| cubic inches | in3 | US Customary Units/Imperial System | 46,656 in3 = 1 yd3 |
| cubic feet | ft3 | US Customary Units/Imperial System | 1 ft3 = 1,728 in3 |
| cubic yards | yd3 | US Customary Units/Imperial System | 1 yd3 = 27 ft3 |
| cubic miles | mi3 | US Customary Units/Imperial System | 1 mi3 = 5,451,776,000 yd3 |
| cubic millimeters | mm3 | Metric System | 1 m3 = 1,000,000,000 mm3 |
| cubic centimeters | cm3 | Metric System | 1 m3 = 1,000,000 cm3 |
| cubic decimeters | dm3 | Metric System | 1 m3 = 1,000 dm3 |
| cubic meters | m3 | Metric System | base unit |
| cubic decameter | dam3 | Metric System | 1 dam3 = 1,000 m3 |
| cubic kilometer | km3 | Metric System | 1 km3 = 1,000,000,000 m3 |
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