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Gallons (US) to Fluid Ounces (US)

Convert gal to fl oz — free online volume converter

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1 gal = 128.00007 fl oz

Gallons (US) to Fluid Ounces (US) Quick Reference

galfl oz

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How to Convert Gallons (US) to Fluid Ounces (US)

This free online converter lets you instantly convert Gallons (US) (gal) to Fluid Ounces (US) (fl oz). Simply enter a value and the result updates automatically. Use the swap button to reverse the conversion.

The quick reference table below shows common Gallons (US) values and their Fluid Ounces (US) equivalents. All calculations are performed locally in your browser — fast, private, and accurate.

FAQ
How many Fluid Ounces (US) are in one Gallons (US)?
One Gallons (US) (gal) equals 128.00007 Fluid Ounces (US) (fl oz).
How do I convert Gallons (US) to Fluid Ounces (US)?
Multiply the Gallons (US) value by 128.00007. For example, 10 gal = 1280.0007 fl oz.
How do I convert Fluid Ounces (US) back to Gallons (US)?
Multiply the Fluid Ounces (US) value by 0.0078124959, or use the swap button. One fl oz = 0.0078124959 gal.
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