VOLUME CONVERSION
US fluid ounces to US gallons converter
Convert us fluid ounces to us gallons instantly.
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No regional currency, unit or language profile is applied. This choice does not convert values or change formulas, results, routes or legal guidance.
1 fl oz equals
0.0078125 galInstant us fluid ounces to us gallons conversionCalculated locally in your browser using the stated conversion formula.US fluid ounces to US gallons conversion guide
Use this calculator when comparing measurements, checking specifications, planning travel, preparing materials or reading information published in another unit system. Enter any value above to receive the converted result immediately.
Worked example: 10 fl oz equals 0.078125 gal. The displayed result is rounded for readability while the calculator retains full numeric precision.
About US fluid ounces and US gallons
- US fluid ounces
- The US fluid ounce equals approximately 29.5735295625 millilitres. Imperial or US customary measurement, depending on the unit.
- US gallons
- A US liquid gallon equals exactly 3.785411784 litres. Imperial or US customary measurement, depending on the unit.
Precision and common mistakes
This page uses the US fluid ounce definition. The US liquid gallon relationship is exact. The calculator keeps the full catalogued factor internally and rounds only the displayed value.
- A US fluid ounce differs from an imperial fluid ounce and from an ounce of mass.
- A US gallon is smaller than a UK imperial gallon.
- Keep the original value and unit together when copying a result, especially when specifications use several measurement systems.
US fluid ounces to US gallons table
1 fl oz0.0078125 gal
5 fl oz0.0390625 gal
10 fl oz0.078125 gal
25 fl oz0.1953125 gal
50 fl oz0.390625 gal
100 fl oz0.78125 gal
Frequently asked questions
How do I convert us fluid ounces to us gallons?
Multiply the us fluid ounces value by 0.00781250000000. For example, 10 fl oz equals 0.078125 gal.
Is this US fluid ounces to US gallons conversion accurate?
The calculator uses the stated conversion relationship and keeps full internal precision before formatting the displayed answer. For regulated or safety-critical work, confirm the required rounding standard.
Can I use this converter on a phone?
Yes. The calculator is responsive, keyboard accessible and performs the conversion locally in a modern browser without requiring an account.
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Verification and calculation details
- Purpose
- US fluid ounces to US gallons converter
- Variables and units
- Use the labelled fields and units shown in the calculator. Results use those units unless a conversion is stated.
- Formula and method
- The exact formula and worked example are shown below. Deterministic formula executed locally in the browser.
- Assumptions
- Only entered values and stated assumptions are included. Local fees, rules and professional requirements are excluded unless explicitly shown.
- Engine version
- 1.0.0
- Production verification baseline
- Release 63 · source
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release-v63-2026-09-20- Last verified
- — Automated release checks passing
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How this calculator works
US gallons = US fluid ounces × 0.00781250000000.
Important notes
Results are estimates based on the values entered. Confirm rates, prices, units and professional requirements that apply in your location. Review the Answer Atlas Calculation Standard and corrections policy for formula, privacy and correction rules.