Converters

Volume Converter

Convert any volume measurement between milliliters, liters, cubic meters, teaspoons, tablespoons, cups, pints, quarts, and gallons.

Enter a value above to see the conversion.

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How Volume Conversion Works

All volume units are expressed as a fixed ratio to the milliliter — the metric base unit used in this converter. To convert from unit A to unit B, the value is multiplied by the milliliter factor of A, then divided by the milliliter factor of B.

result = value × (A_to_mL / B_to_mL)

Example: 2 L → gal = 2 × (1000 / 3785.41) ≈ 0.5283 gal

Metric

  • 1 m³ = 1,000 L
  • 1 L = 1,000 mL

Imperial / US

  • 1 gal = 4 qt = 8 pt
  • 1 cup = 8 fl oz
  • 1 tbsp = 3 tsp

Metric vs US Volume Units

The metric system uses liters and milliliters for everyday liquids, and cubic meters for large volumes. These units scale cleanly by powers of ten and are used in scientific, medical, and culinary contexts worldwide.

US customary volume units — teaspoons, tablespoons, cups, pints, quarts, and gallons — are widely used in American cooking and food labelling. While practical for recipes, their irregular ratios (3 teaspoons per tablespoon, 16 tablespoons per cup) make conversion more error-prone than metric equivalents.

Frequently asked questions

How many liters are in a gallon?
One US gallon equals approximately 3.78541 liters. Note that a UK (imperial) gallon is larger at approximately 4.54609 liters, so always confirm which gallon is meant in context.
How many cups are in a liter?
One liter equals approximately 4.227 US cups. To convert liters to cups, multiply by 4.22675. To convert cups to liters, multiply by 0.23659.
What is the difference between a fluid ounce and a regular ounce?
A fluid ounce measures volume (approximately 29.57 mL), while a regular ounce measures weight (approximately 28.35 g). They are different units for different quantities.
How many tablespoons are in a cup?
There are 16 tablespoons in one US cup. Since each tablespoon equals 3 teaspoons, one cup also equals 48 teaspoons. This relationship is helpful for scaling cooking recipes.
How many milliliters are in a teaspoon?
One US teaspoon equals approximately 4.929 milliliters. The metric equivalent often used in cooking is 5 ml, which is close enough for most recipes. A tablespoon is three times that amount.

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