🧮 Calculators & Daily Life

Area & Volume Calculator

Pick a shape and enter its dimensions to get the area or volume right away. Area for circles, triangles, trapezoids and more; volume for spheres, cylinders and cones. Great for study, DIY and quick dimension checks. Your input never leaves your browser.

Examples (click to try)
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How to Use the Area & Volume Calculator

First choose Area or Volume at the top, then pick a shape. Only the dimension fields that shape needs are shown, and the result updates as you type — no button to press. Not sure where to start? Tap one of the Examples (click to try) chips above the fields to fill in a shape and its dimensions and see the result instantly.

Example: choose Area → Circle and enter a radius of 5 to get π × 5² = 78.54. Switch to Volume → Sphere with radius 3 for 4/3 × π × 3³ = 113.1, or Cylinder with radius 2 and height 10 for π × 2² × 10 = 125.66.

Tip: values recalculate on every keystroke. Numbers carry no unit symbol, so if you enter centimetres the area is in cm² and the volume in cm³.

  • Area: square, rectangle, triangle, circle, trapezoid, parallelogram and ellipse (7 shapes).
  • Volume: cube, box, sphere, cylinder and cone (5 shapes).

Handy for

  • Checking area and volume formulas for math homework or exam prep
  • Estimating a board's area or a container's capacity for DIY and crafts
  • Working out room or land size, or the area of a round table

Frequently Asked Questions

Is the data I enter sent to a server?
No. All calculations happen entirely in your browser. The numbers you enter and the results are never transmitted to or stored on any server. You can use this tool with complete confidence.
What value of pi do you use?
It uses the browser's built-in pi (Math.PI, about 3.14159265…) and rounds the result to two decimal places. Whole-number results are shown as integers.
How are units handled, and how do I switch between area and volume?
Numbers are used without unit symbols. The result is in the same unit as your input — area is that unit squared (e.g. enter cm to get cm²) and volume is cubed (cm³). Use the Area / Volume switch at the top to choose, then pick a shape to reveal the dimension fields it needs.