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

\(r\)

(radius)

units

Circumference

units

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How to use this Circle Circumference Calculator 🤔

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

Circle Circumference

The circumference of a circle is the distance around the outer boundary or edge of the circle.

Formula

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

Circumference = \(2π r \)

where

Calculation

{
  "topic": "circle-circumference",
  "img": {
    "width": 246,
    "height": 246
  },
  "input_types": [
    "float"
  ],
  "input_labels": [
    "r"
  ],
  "input_values": [
    "8"
  ],
  "input_units": [
    "units"
  ],
  "input_descriptions": [
    "radius"
  ],
  "examples": [
    {
      "r": 1
    },
    {
      "r": 15
    }
  ],
  "type": "Calculate",
  "title": "Circle Circumference",
  "category": "Geometry",
  "shape": "Circle",
  "formula_mathjax": "\\(2π r \\)",
  "formula_mathjax_sub": "\\(2π \\times r \\)",
  "formula": "2*Math.PI *  r ",
  "op_label": "Circumference",
  "output_unit": "units",
  "description": "The circumference calculator calculates the circumference of a circle by taking its radius as input.",
  "explanation": "The circumference of a circle is the distance around the outer boundary or edge of the circle."
}