Diameter:

Radius Calculator is a free online tool that displays the radius when the diameter is given. BYJU’S online radius calculator tool makes the calculation faster, and it displays the radius value in a fraction of seconds.

## How to Use the Radius Calculator?

The procedure to use the radius calculator is as follows:

Step 1: Enter the diameter in the respective input field

Step 2: Now click the button “Solve” to get the radius

Step 3: Finally, the radius will be displayed in the output field

### What is Meant by the Radius?

In mathematics, the radius is a term which is generally used for the measurement of a circle. We know that a circle is a closed two-dimensional figure, in which all the points on the circle surface are equidistant from the centre point called “Centre”. The distance between the centre and the points on the surface is termed as the radius “R”. Similarly, the diameter of the circle is defined as the measure where the straight line passes from one side to the other side through the centre. The radius can be easily measured when the diameter is given because the radius is half of the diameter. The formula to calculate the radius, when the diameter is given as follows: