To convert imperial fluid ounces to imperial gallons, multiply by 0.00625.
The calculation uses 1 fl oz = 0.00625 gal. Results are displayed to at most 10 significant digits. Definitions can be exact while a displayed decimal is rounded. Match the displayed precision to your original measurement.
The formula
value in gal = value in fl oz × 0.00625
fl oz- Input unit: imperial fluid ounces
gal- Output unit: imperial gallons
How to use this calculator
- Enter a value in fl oz.
- Multiply by the stored conversion factor.
- Read the result in gal; divide by the same factor to convert back.
Worked examples
Worked conversion
1 fl oz × 0.00625 ≈ 0.00625 gal.
Reverse conversion
0.00625 gal ÷ 0.00625 ≈ 1 fl oz. Rounding intermediate values can change the last displayed digit.
Frequently asked questions
What factor does this converter use?
It uses 0.00625 gal per fl oz.
Why can another converter show a slightly different answer?
Check the unit convention first (such as US versus Imperial or decimal versus binary), then compare rounding. Measurement uncertainty is separate from the unit conversion.
fl oz to gal table
| fl oz | gal (rounded) |
|---|---|
| 0 | 0 |
| 1 | 0.00625 |
| 2 | 0.0125 |
| 5 | 0.03125 |
| 10 | 0.0625 |
| 100 | 0.625 |
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