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1. Convert Online
2. Mathematics
3. Geometry
4. Circle Area

\(r\)

(radius)

units

Area

square units

Copy

How to use this Circle Area Calculator 🤔

1. Enter ✎ value for radius \((r)\).
2. As soon as you enter the required input value(s), the Circle Area is calculated immediately, and displaed in the output section (present under input section).

Circle Area

The area of a circle is defined as the area enclosed in the circular shape.

Formula

To calculate the circle area, you can use the following formula.

Area = \(π r ^2\)

where

Calculation

{
  "topic": "circle-area",
  "img": {
    "width": 246,
    "height": 246
  },
  "input_types": [
    "float"
  ],
  "input_labels": [
    "r"
  ],
  "input_values": [
    "8"
  ],
  "input_units": [
    "units"
  ],
  "input_descriptions": [
    "radius"
  ],
  "examples": [
    {
      "r": 5
    },
    {
      "r": 1
    }
  ],
  "type": "Calculate",
  "title": "Circle Area",
  "category": "Geometry",
  "shape": "Circle",
  "formula_mathjax": "\\(π r ^2\\)",
  "formula_mathjax_sub": "\\(π \\times r ^2\\)",
  "formula": "Math.PI * ( r ** 2)",
  "op_label": "Area",
  "output_unit": "square units",
  "description": "The circle area calculator calculates the area of a circle by taking its radius as input.",
  "explanation": "The area of a circle is defined as the area enclosed in the circular shape."
}