Convert Fluid Ounce (US) to imperial gallons
Americas · Cooking Measures · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Fluid Ounce (US) = 0.00650526 imperial gallons
imperial gallons = Fluid Ounce (US) × 0.0065052606
Convert any amount
Fluid Ounce (US) to imperial gallons table
| Fluid Ounce (US) | imperial gallons |
|---|---|
| 0.25 Fluid Ounce (US) | 0.00162632 imperial gallons |
| 0.5 Fluid Ounce (US) | 0.00325263 imperial gallons |
| 1 Fluid Ounce (US) | 0.00650526 imperial gallons |
| 2 Fluid Ounce (US) | 0.0130105 imperial gallons |
| 3 Fluid Ounce (US) | 0.0195158 imperial gallons |
| 4 Fluid Ounce (US) | 0.026021 imperial gallons |
| 5 Fluid Ounce (US) | 0.0325263 imperial gallons |
| 10 Fluid Ounce (US) | 0.0650526 imperial gallons |
| 20 Fluid Ounce (US) | 0.130105 imperial gallons |
| 25 Fluid Ounce (US) | 0.162632 imperial gallons |
| 50 Fluid Ounce (US) | 0.325263 imperial gallons |
| 100 Fluid Ounce (US) | 0.650526 imperial gallons |
About the Fluid Ounce (US)
US fl oz = 29.57ml.
- Symbol
- fl oz
- Value in SI
- 1 Fluid Ounce (US) = 0.0295735 litre
- Typical use
- cooking
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI litre. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other cooking measures units in the Americas family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many imperial gallons are in a Fluid Ounce (US)?
1 Fluid Ounce (US) = 0.00650526 imperial gallons. Multiply the number of Fluid Ounce (US) by 0.0065052606 to get imperial gallons.
What is Fluid Ounce (US) used for?
US fl oz = 29.57ml. It is classified as active and dates from the modern period.
Is the Fluid Ounce (US) value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI litre, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Fluid Ounce (US) conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Fluid Ounce (US) to imperial gallons. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/fl-oz-us-to-imperial-gallon
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