Area and volume calculator
Choose a shape and enter its dimensions. Solids also show their capacity in liters.
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How it is calculated
Circle: A = π r² Triangle: A = b × h / 2 Trapezoid: A = (B + b) / 2 × h
Cylinder: V = π r² h Sphere: V = 4/3 π r³ Cone: V = π r² h / 3
One cubic metre holds 1000 liters; one cubic foot holds 28.3 liters (7.48 US gallons).
Frequently asked questions
How many liters fit in a cylinder 1 m in radius and 1 m tall?
About 3142 liters (π m³).
How do you find the area of a circle?
Multiply π by the radius squared: with r = 2 m, 12.57 m².