EveryFix

Volume Converter

The Volume Converter instantly converts between metric and US customary volume units, including milliliters, liters, cubic meters, cubic feet, gallons, quarts, cups, and fluid ounces.

Beginner⏱ 30 secondsUpdated 2026-06-12

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Enter your details above and click “Convert Volume” to see your results here.

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How This Tool Works

Enter a value and choose your source and target volume units for an instant conversion.

Formula & Method

All units convert through liters as a common base, e.g., 1 US gallon = 3.78541 liters.

Example Calculation

1 US gallon converts to about 3.785 liters, or 16 cups.

Please note: This calculator provides estimates for general informational purposes only. Results may not be accurate for every situation — use your judgment and consult a relevant professional when it matters.

Frequently Asked Questions

How many liters are in a gallon?+

One US gallon equals approximately 3.785 liters. Note that a UK (imperial) gallon is larger, at about 4.546 liters.

How many cups are in a liter?+

One liter equals approximately 4.23 US cups.

Does this use US or imperial gallons?+

This converter uses US customary units (US gallons, quarts, cups, fluid ounces) throughout.

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