Convert fluid ounce (fl oz) to US gallon (gal US).
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US Gallon to Fluid Ounce Converter (US gal to fl oz)
Convert US gallon (gal US) to fluid ounce (fl oz).Unit Converter · Volume
Quick answer
1 US gallon (US gal) is equal to 128 fluid ounces (fl oz). 1 fluid ounce (fl oz) is equal to 0.0078125 US gallons (US gal).
To convert US gal to fl oz, multiply the value in US gallons by 128. For example, 10 US gal = 1,280 fl oz, and 100 US gal = 12,800 fl oz.
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Quick reference — US gallon to fluid ounce
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How to convert US gallons to fluid ounces
How many fluid ounces are in a US gallon? 1 US gallon is 128 fluid ounces. This free US gal to fl oz converter and US gallon to fluid ounce calculator gives the answer instantly for any value.
To convert US gallon (US gal) to fluid ounce (fl oz), multiply the value in US gallons by 128.
fl oz = US gal × 128
- 1
Take the value in US gallons
For example, 25 US gal.
- 2
Multiply by 128
25 × 128.
- 3
Read the answer in fluid ounces
25 US gal = 3,200 fl oz.
US Gallon to Fluid Ounce conversion table
Common values from 1 to 1,000 US gallons converted to fluid ounces.
| US Gallon (US gal) | Fluid Ounce (fl oz) |
|---|---|
| 1 US gal | 128 fl oz |
| 2 US gal | 256 fl oz |
| 3 US gal | 384 fl oz |
| 4 US gal | 512 fl oz |
| 5 US gal | 640 fl oz |
| 6 US gal | 768 fl oz |
| 7 US gal | 896 fl oz |
| 8 US gal | 1,024 fl oz |
| 9 US gal | 1,152 fl oz |
| 10 US gal | 1,280 fl oz |
| 15 US gal | 1,920 fl oz |
| 20 US gal | 2,560 fl oz |
| 25 US gal | 3,200 fl oz |
| US Gallon (US gal) | Fluid Ounce (fl oz) |
|---|---|
| 30 US gal | 3,840 fl oz |
| 40 US gal | 5,120 fl oz |
| 50 US gal | 6,400 fl oz |
| 60 US gal | 7,680 fl oz |
| 70 US gal | 8,960 fl oz |
| 75 US gal | 9,600 fl oz |
| 80 US gal | 10,240 fl oz |
| 90 US gal | 11,520 fl oz |
| 100 US gal | 12,800 fl oz |
| 250 US gal | 32,000 fl oz |
| 500 US gal | 64,000 fl oz |
| 1,000 US gal | 1,28,000 fl oz |
About US gallons and fluid ounces
US Gallon (US gal)
A US gallon is about 3.785 liters, or 4 US quarts (128 US fluid ounces).
Fluid Ounce (fl oz)
A US fluid ounce is about 29.57 milliliters. Eight fluid ounces make one US cup, and sixteen make a US pint.
US gal to fl oz: common questions
- How many fluid ounces are in 1 US gallon?
- 1 US gallon (US gal) is equal to 128 fluid ounces (fl oz). In short: 1 US gal = 128 fl oz.
- How do I convert US gallons to fluid ounces?
- To convert US gal to fl oz, multiply the value in US gallons by 128. For example, 5 US gal = 640 fl oz.
- How do I convert fluid ounces to US gallons?
- To convert fl oz to US gal, divide the value in fluid ounces by 128. Or open the Fluid Ounce to Us Gallon converter, which does it for you.
- What is 10 US gal in fl oz, and what is 100 US gal?
- 10 US gal = 1,280 fl oz, and 100 US gal = 12,800 fl oz. The table above lists more values from 1 to 1,000.
- Is this US gal to fl oz converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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