Gallons (US) to Fluid ounces (US) Converter
Convert gal to fl oz instantly — and see every other volume unit at once.
1 gal=128.0001 fl oz
1 gal in every unit
Milliliters
3,785.41ml
Liters
3.7854L
Cubic meters
0.003785m³
Cubic centimeters
3,785.41cm³
Cubic inches
230.9999in³
Cubic feet
0.13368ft³
Fluid ounces (US)
128.0001fl oz
Cups (US)
16cup
Pints (US)
8pt
Quarts (US)
4qt
Gallons (US)from
1gal
Gallons (UK)
0.832674gal (UK)
Common Gallons (US) to Fluid ounces (US) conversions
| Gallons (US) (gal) | Fluid ounces (US) (fl oz) |
|---|---|
| 1 gal | 128.00007 fl oz |
| 2 gal | 256.00014 fl oz |
| 5 gal | 640.00034 fl oz |
| 10 gal | 1280.00068 fl oz |
| 25 gal | 3200.00169 fl oz |
| 50 gal | 6400.00338 fl oz |
| 100 gal | 12800.00676 fl oz |
| 250 gal | 32000.01691 fl oz |
| 500 gal | 64000.03381 fl oz |
| 1000 gal | 128000.06763 fl oz |
The formula
Gallons (US) (gal) — a unit of volume.
Fluid ounces (US) (fl oz) — a unit of volume.
Worked examples
1 gal→128.00007 fl oz
Apply Gallons (US) × 128 with input = 1. Result: 128.00007 fl oz.
5 gal→640.00034 fl oz
Apply Gallons (US) × 128 with input = 5. Result: 640.00034 fl oz.
10 gal→1280.00068 fl oz
Apply Gallons (US) × 128 with input = 10. Result: 1280.00068 fl oz.
FAQ
How do I convert Gallons (US) to Fluid ounces (US)?
Use the formula: fl oz = Gallons (US) × 128. You can also use the converter above — type any value and the result updates instantly.
Where are Gallons (US) used?
Gallons (US) (gal) — a unit of volume.
Where are Fluid ounces (US) used?
Fluid ounces (US) (fl oz) — a unit of volume.