AdBlocker Detected
adblocker detected
Calculatored depends on revenue from ads impressions to survive. If you find calculatored valuable, please consider disabling your ad blocker or pausing adblock for calculatored.

Circumference to Diameter Calculator


Table of Content


Circumference to diameter calculator helps you convert or calculate a circle's diameter when the circumference is known, and vice versa. It simplifies the conversion process which provides users with quick and accurate results without the need for manual calculations.

Parts of a circle:

A circle consists of three main parts, which includes:


The circumference of a circle is the total curved distance around its outer boundary.


A diameter is the longest straight line segment that passes through the center of a circle and intersects both its opposite ends. It is equal to twice the radius.


The radius of a circle is the straight line from its center to any point on the circumference. it is half of the diameter.

Circumference to diameter formula:

$$ d = \frac{C}{\pi} $$


  • d – diameter of the circle.
  • C – Circumference of the circle.
  • π – Pi (approximately 3.14159)

Finding the distance around a circle seems complex, but it's not. We have included a helpful example below to illustrate how to find the diameter from the circumference of a circle, such as:


Suppose you have a circle with a circumference (C) of 30 centimeters. Now, you want to find the diameter (d) of that circle.

Using the formula:

\(d = \frac{C}{\pi}\)

Adding up the values:

\(d = \frac{30}{\pi}\)

Now, calculate:

\(d \approx \frac{30}{3.14159} \approx 9.55\)

How to find the circumference when diameter is known?

To find the circumference from the diameter of a circle is pretty simple with the help of the following formula:

  • (C = π d) or (C = 2 π r)


Let's say the diameter of a circle is 10 cm. To find the circumference (C), you can use the formula that we discussed above:

C = π d

Add the values into the formula:

C= 3.142 × 10cm

Now, calculate the circumference:

C ≈ 31.42cm

Alan Walker

Studies mathematics sciences, and Technology. Tech geek and a content writer. Wikipedia addict who wants to know everything. Loves traveling, nature, reading. Math and Technology have done their part, and now it's the time for us to get benefits.

Submit Your Review