Area and Volume Calculator
Area and volume of the most common shapes, with the formula next to the result.
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Enter the measurements.
Use the same unit for every measurement (in, ft, cm, m…). Volume in m³: 1 m³ = 1,000 liters.
Quick answer: To find the area, choose Area, pick the shape and enter the measurements: the result shows up with the formula used. For volume, choose Volume and the shape (cube, box, cylinder, sphere or cone). Use the same unit for every measurement, whether feet, inches or meters; in meters, volume comes out in m³ (1 m³ = 1,000 liters).
How to do it in 3 steps
- 1Choose area or volume.
- 2Pick the shape.
- 3Enter the measurements and see the result.
Why use Pronto Arquivo
10 shapes
Rectangle, square, triangle, circle, trapezoid, cube, box, cylinder, sphere and cone.
Formula included
Great for studying and double-checking.
Home projects
Floor and wall area, water tank and concrete volume.
Any unit
in, ft, cm or m: the result comes in the same unit squared or cubed.
Guides
Pools and tanks
In feet, cubic feet × 7.48 = US gallons. A 16 × 32 × 5 ft pool holds 2,560 ft³, about 19,150 gallons. In meters, m³ × 1,000 = liters.
Frequently asked questions
How do I find the area of a rectangular lot?
Width × depth. 50 ft × 120 ft = 6,000 ft².
How do I find the area of a circle?
π × radius². Radius 3 ft: 3.14 × 9 = 28.27 ft².
How do I find the volume of a cylinder?
π × radius² × height.
How many liters are in 1 m³?
1,000 liters, or about 264 US gallons.
