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

\(r\)

(radius)

units

Diameter

units

Copy

How to use this Circle Diameter Calculator 🤔

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

Circle Diameter

The diameter of a circle is a straight line segment that passes through the center of the circle and has both of its endpoints on the circle's boundary. It is the longest distance that can be measured within a circle. In other words, the diameter is twice the length of the radius, which is the distance from the center of the circle to any point on its boundary.

Formula

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

Diameter = \(2 r \)

where

Calculation

{
  "topic": "circle-diameter",
  "img": {
    "width": 246,
    "height": 246
  },
  "input_types": [
    "float"
  ],
  "input_labels": [
    "r"
  ],
  "input_values": [
    "8"
  ],
  "input_units": [
    "units"
  ],
  "input_descriptions": [
    "radius"
  ],
  "examples": [
    {
      "r": 10
    },
    {
      "r": 1.5
    }
  ],
  "type": "Calculate",
  "title": "Circle Diameter",
  "category": "Geometry",
  "shape": "Circle",
  "formula_mathjax": "\\(2 r \\)",
  "formula_mathjax_sub": "\\(2 * r \\)",
  "formula": "2 * r ",
  "op_label": "Diameter",
  "output_unit": "units",
  "description": "The circle diameter calculator calculates the diameter of a circle by taking its radius as input.",
  "explanation": "The diameter of a circle is a straight line segment that passes through the center of the circle and has both of its endpoints on the circle's boundary. It is the longest distance that can be measured within a circle. In other words, the diameter is twice the length of the radius, which is the distance from the center of the circle to any point on its boundary."
}