Gallons to Fluid Ounces
Convert gallons to fluid ounces — type a value in either box for an instant result.
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Fluid Ounces
1 gal = 128 fl oz · multiply by 128
| Gallons | Fluid Ounces |
|---|---|
| 1 gal | 128 fl oz |
| 2 gal | 256 fl oz |
| 3 gal | 384 fl oz |
| 5 gal | 639.999999 fl oz |
| 10 gal | 1279.999998 fl oz |
| 25 gal | 3199.999996 fl oz |
| 50 gal | 6399.999992 fl oz |
| 100 gal | 12799.999984 fl oz |
How to use
- Type a value in either field.
- The other unit updates instantly.
- Use the reference table for common values.
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FAQ
How many fluid ounces are in a gallon?
1 gal = 128 fl oz.
Is this converter free?
Yes — it runs instantly in your browser, with no signup.
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