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🧪 Volume Converter

Convert between liters, gallons, milliliters, cups, fluid ounces, cubic meters and more — instantly and accurately.

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Unit Reference
Metric L, mL, cL, dL, kL, m³
Imperial gal, qt, pt, fl oz, gill
US US gal, US qt, US pt, US cup
Cooking tbsp, tsp, cup, drop
Cubic cm³, in³, ft³, yd³
Common Conversions
1 L = 0.264172 US gal
1 US gal = 3.78541 L
1 cup = 236.588 mL
1 fl oz = 29.5735 mL
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About Volume Measurement

Metric System

The metric system uses liters (L) and milliliters (mL) as the primary units of volume. 1 liter = 1000 mL. The system is based on powers of 10, making conversions straightforward. Used globally in science and most countries.

US vs Imperial

US customary and Imperial (UK) units share names like gallon, pint, and fluid ounce — but they differ in size. A US gallon is 3.785 L while an Imperial gallon is 4.546 L. Always check which system is being used.

Cooking Units

Teaspoons (tsp), tablespoons (tbsp), and cups are widely used in cooking. In the US: 1 cup = 16 tbsp = 48 tsp = 236.6 mL. These vary slightly between countries, so always verify for recipes.

Cubic Units

Volume can also be expressed as cubic length units. 1 liter = 1 cubic decimeter = 1000 cm³. Cubic feet and cubic inches are common in engineering. 1 ft³ ≈ 28.317 liters.