Volume converter
US gallon to Fluid ounce Converter
Convert gal to fl oz or reverse with one click. Type a value below for an instant result.
US gallon gal
Fluid ounce fl oz
gal → fl oz · runs in your browser, no server
How to convert us gallon to fluid ounce
US gallon (gal) and Fluid ounce (fl oz) both measure volume. Whether you are studying, traveling, cooking, or working on a project, converting between them should be fast and accurate.
Looking for the opposite direction? See our dedicated fluid ounce to us gallon converter — same formula reversed, with content written for that direction.
The standard relationship used on this page means that 1 us gallon equals 128.000067 fl oz. Enter any number in the calculator — use the swap button to reverse the direction without leaving the page.
Converting 1 gal gives 128.000067 fl oz. This is a practical reference when switching between us gallon and fluid ounce for cooking measurements, fuel economy context, and liquid packaging.
Need fluid ounce to us gallon instead? Try our Fluid ounce to US gallon converter. floz → gallon
gal to fl oz conversion table
| gal | fl oz |
|---|---|
| 1 | 128.000067 |
| 2 | 256.000135 |
| 4 | 512.000270 |
| 8 | 1024.000541 |
| 16 | 2048.001082 |
| 32 | 4096.002164 |
| 64 | 8192.004328 |
fl oz to gal conversion table
Or click the swap button in the converter to switch from fl oz to gal.
| fl oz | gal |
|---|---|
| 1 | 0.007812 |
| 2 | 0.015624 |
| 4 | 0.031249 |
| 8 | 0.062499 |
| 16 | 0.124999 |
| 32 | 0.249999 |
| 64 | 0.499999 |
Frequently asked questions
How many fluid ounces are in 1 us gallon? +
One us gallon equals 128.000067 fl oz. Use the converter above for any value — results are calculated locally with full precision.
How do I convert gal to fl oz? +
Use the formula: fl oz = gal × 128.000067. Enter your value in the calculator and the result appears instantly. Click the swap button to convert fl oz back to gal.
How many us gallons are in 1 fluid ounce? +
One fluid ounce equals 0.007812 gal. Swap the converter direction to work backwards from fl oz to gal.
What is 10 gal in fl oz? +
10 gal is 1280.000676 fl oz. See the conversion table on this page for more common values.
When would I convert us gallon to fluid ounce? +
This conversion is useful for cooking measurements, fuel economy context, and liquid packaging. ConvertHub runs entirely in your browser — no data is uploaded to any server.
Is us gallon to fluid ounce the same as fluid ounce to us gallon? +
They are inverse operations. This page focuses on gal → fl oz with examples and tables for that direction. For fl oz → gal, use our separate fluid ounce to us gallon converter page.