Volume measures three-dimensional space. The litre is the everyday metric unit (one cubic decimetre); the cubic metre is the SI unit and equals 1,000 litres. Cooking uses cups, tablespoons and teaspoons, while the US gallon (3.785 litres) differs from the imperial gallon (4.546 litres) — this calculator uses US customary units.

Because volume scales with the cube of length, 1 m = 100 cm but 1 m³ = 1,000,000 cm³.

Handy Volume reference points

1 L = 1,000 mLLitre to millilitres
1 US gal ≈ 3.785 LUS gallon to litres
1 cup ≈ 236.6 mLUS cup to millilitres
1 tsp = 5 mLTeaspoon to millilitres
≈ 355 mLA standard soda can

Supported Volume units

Milliliters (ml) — One thousandth of a litre.
Liters (L) — One cubic decimetre; the everyday metric volume unit.
Cubic meters (m³) — The SI unit of volume, equal to 1,000 litres.
Teaspoons (tsp) — A teaspoon, 5 mL in cooking.
Tablespoons (tbsp) — A tablespoon, 15 mL (three teaspoons).
Fluid ounces (fl oz) — A US fluid ounce, about 29.57 mL.
Cups (cup) — A US cup, about 236.6 mL.
Pints (pt) — A US pint, about 473 mL.
Quarts (qt) — A US quart, about 946 mL (two pints).
Gallons (gal) — A US gallon, 3.785 litres (four quarts).

This tool is provided for general information only. Verify important figures independently. · Last reviewed: August 25, 2026