Circle Circumference Calculator

The circumference calculator calculates the circumference of a circle by taking its radius as input.

How to use Circle Circumference Calculator

Enter ✎ value for radius \((r)\).
The result appears beneath the inputs as you enter values.

About this calculation

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."
}