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Volume Converter

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1 gallon = 3.785 L = 4 quarts = 128 fl oz

Convert between volume units for liquids and containers. Transform gallons to liters, quarts to cups, and more. Perfect for cooking, fuel, beverages, and scientific measurements.

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How We Calculate This

All conversions use milliliters as the base unit. 1 tbsp = 14.787 mL, 1 fl oz = 29.574 mL, 1 cup = 236.588 mL, 1 pt = 473.176 mL, 1 qt = 946.353 mL, 1 gal = 3785.41 mL, 1 L = 1000 mL.

Frequently Asked Questions

How many liters are in a gallon?

1 US gallon equals approximately 3.785 liters. 1 UK gallon (imperial) equals about 4.546 liters. This calculator uses US measurements.

How many cups are in a quart?

There are 4 cups in 1 quart. There are 2 pints in 1 quart, and 2 cups in 1 pint.

How do I convert milliliters to fluid ounces?

Divide milliliters by 29.574 to get fluid ounces. For example, 100 mL ÷ 29.574 = 3.38 fl oz.

What is the difference between US and UK fluid ounces?

1 US fluid ounce = 29.574 mL. 1 UK fluid ounce = 28.413 mL. This calculator uses US measurements.

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