Diameter Calculator

Diameter Calculator is a free online tool which helps you to calculate the diameter of a circle with the help of the other dimensions.

What is a Diameter Calculator?

In Cuemath's diameter calculator, enter the values for the area, radius or circumference and get the length of the diameter within a few seconds.

Note: Enter up to 4 digits.

How to Use the Diameter Calculator?

Follow the steps mentioned below to find the diameter of a circle.

• Step 1: Select the option from the drop-down menu to enter the input value for the radius, area, or circumference.
• Step 2: Enter the value for the option that you chose in the first step and click on "Calculate" to find the diameter of the circle.
• Step 3: Click on "Reset" to clear the fields and enter the new value.

How to Calculate Diameter?

The diameter of a circle is a straight line joining a point from one end of the circle to a point on the other end of the circle, passing through the center. The size of the circle changes when the length of the diameter varies.The diameter of a circle can be calculated if the radius is known. The formula for the diameter of a circle when the radius is known is: Diameter = Radius × 2

The formula for the diameter of a circle when its circumference is known is: Diameter = Circumference / п

The formula for the diameter of a circle when the area is known is: Diameter = 2 × ⎷(Area of Circle / п)

We substitute the values in the given formulas to find the diameter. Let us learn more with the help of the following example.

Solved Example:

If the Circumference of a circle is 14 inches, what is the length of its diameter?

Solution:

Circumference = 14 inches; we know that: Diameter = Circumference / п

= (14/3.14) inches

= 4.459 inches

Now, try the calculator to find the diameter of a circle for the following dimensions:

• Find the diameter of a circle whose area is 16 unit².
• Find the diameter of a circle whose radius is 8 units.
• Find the diameter of a circle whose circumference is 46 units.