1 US fluid ounce to US gallons
1 fl oz = 0.0078125 gal. Change the amount below, or read the formula and the reference table further down.
1 US fluid ounce equals
US gallons
1 fl oz = 0.0078125 gal
The formula
US fluid ounces and US gallons both measure volume from the same zero, so a single multiplier does the job.
gal = fl oz × 0.0078125
Going the other way? Convert US gallons to US fluid ounces.
US fluid ounces to US gallons table
Values either side of 1 fl oz.
| US fluid ounces (fl oz) | US gallons (gal) |
|---|---|
| -4 | -0.03125 |
| -3.5 | -0.027344 |
| -3 | -0.023437 |
| -2.5 | -0.019531 |
| -2 | -0.015625 |
| -1.5 | -0.011719 |
| -1 | -0.007813 |
| -0.5 | -0.003906 |
| 0 | 0 |
| 0.5 | 0.003906 |
| 1 | 0.007813 |
| 1.5 | 0.011719 |
| 2 | 0.015625 |
| 2.5 | 0.019531 |
| 3 | 0.023437 |
| 3.5 | 0.027344 |
| 4 | 0.03125 |
| 4.5 | 0.035156 |
| 5 | 0.039063 |
| 5.5 | 0.042969 |
| 6 | 0.046875 |
Questions people ask
- How many US gallons are in a US fluid ounce?
- One US fluid ounce equals 0.0078125 US gallons.
- How do I convert US fluid ounces to US gallons by hand?
- Multiply the number of US fluid ounces by 0.0078125. For a rough check, 0.008 is close enough for most everyday use.
- What is 1 US fluid ounce in US gallons?
- 1 US fluid ounce is 0.0078125 US gallons.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.