Ad Unit — Top
Volume Converter
Convert between metric and imperial volume units instantly.
Quick Reference
1 US gallon = 3.78541 L
1 UK gallon = 4.54609 L
1 cup = 236.588 mL
1 fl oz (US) = 29.5735 mL
1 tablespoon = 14.787 mL
1 teaspoon = 4.929 mL
Frequently Asked Questions
How many cups are in a gallon?▼
There are 16 cups in a US gallon. A gallon contains 4 quarts, each quart contains 2 pints, each pint contains 2 cups — so 4 × 2 × 2 = 16 cups.
What is the difference between US and UK gallons?▼
A US gallon is 3.785 liters, while a UK (imperial) gallon is 4.546 liters — about 20% larger. This difference matters for fuel economy comparisons between countries.
How many ml in a fluid ounce?▼
One US fluid ounce equals 29.5735 mL. UK fluid ounce is slightly different at 28.413 mL. This matters when following recipes from different countries.
Is a cubic centimeter the same as a milliliter?▼
Yes — 1 cm³ = 1 mL exactly. This equivalence is why medical dosages are often expressed in cc (cubic centimeters) interchangeably with mL.
Ad Unit — Middle