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Convert gallon (US) to fluid ounce (US)

Convert gallon (US) to fluid ounce (US) with a verified formula, worked example, conversion table, precision guidance, and reverse conversion.

gallon (US) to fluid ounce (US)

gallon (US) to fluid ounce (US)

fluid ounce (US)

Quick answer

1 gallon (US) = 128 fluid ounce (US).

Formula

fluid ounce (US) = gallon (US) × 128.0000000000234695530608043

Precision

The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.

How to convert gallon (US) to fluid ounce (US)

  • Enter a value in gallon (US).
  • CalculatorHQ converts this pair with the expression y = x × 128.0000000000234695530608043.
  • Round the displayed fluid ounce (US) value only when needed.

About these units

gallon (US) is a unit used in volume conversions. Volume measures three-dimensional space or liquid capacity. Its recorded symbol is gal (US). fluid ounce (US) is a unit used in volume conversions. Volume measures three-dimensional space or liquid capacity. Its recorded symbol is fl oz (US).

Explore related conversions

gallon (US) to fluid ounce (US) conversion table

gallon (US)fluid ounce (US)
0 gallon (US)0e-25 fluid ounce (US)
1 gallon (US)128.000000000 fluid ounce (US)
5 gallon (US)640.000000000 fluid ounce (US)
10 gallon (US)1280.00000000 fluid ounce (US)
25 gallon (US)3200.00000000 fluid ounce (US)
100 gallon (US)12800.0000000 fluid ounce (US)

Frequently asked questions

How do I convert from gallon (US) to fluid ounce (US)?

CalculatorHQ converts this pair with the expression y = x × 128.0000000000234695530608043.

What formula does CalculatorHQ use for gallon (US) to fluid ounce (US)?

fluid ounce (US) = gallon (US) × 128.0000000000234695530608043

How should I round the result?

The stored factor is used at full decimal precision; round only the displayed result to the precision required by the task.

Can I convert fluid ounce (US) back to gallon (US)?

Yes. Use the linked reverse conversion, whose formula is validated against this pair with round-trip tests.