Formulas
- Cube: edge³. Box: length × width × height.
- Cylinder: π × r² × h. Cone: π × r² × h ÷ 3.
- Sphere: 4/3 × π × r³. Pyramid: base area × height ÷ 3.
Example
A tank 2 ft long, 1 ft wide and 1.5 ft high holds 3 ft³, about 85 liters or 22.4 gallons.
Frequently asked questions
How do I convert to liters?
1 m³ = 1,000 liters, 1 ft³ ≈ 28.32 liters and 1 gallon ≈ 3.785 liters. The calculator does it for you.
See also
Results are estimates for information only and are not financial, legal or medical advice. Rates, taxes and fees vary — confirm with a professional or your lender.