Circle Calculator

Calculate circle properties from any known value. Enter one value below:

Overview

This tool calculates circle properties. It computes the radius, diameter, circumference, and area. The tool is simple and clear.

How to Use This Tool

Step-by-Step Instructions

  1. Select the measurement unit you want.
  2. Enter one positive value. You can choose radius, diameter, circumference, or area.
  3. Click the calculate button.
  4. Results appear below the inputs.
  5. Click the clear button to remove all entries.

Explanation of Input Fields

The unit selector lets you choose a measurement unit like millimeters or inches. The radius field accepts the circle's radius value. The diameter field is for the circle's diameter. The circumference field is for the circle's length around. The area field is for the circle's surface size. Only one field should have a number as input.

Understanding the Output

The result section shows the computed values. It displays the radius, diameter, and circumference with the chosen unit. The area shows a unit with a squared sign. Values are fixed to four decimals. This format helps you compare figures easily.

Limitations and Special Notes

Enter a valid positive number in one field. The tool clears other fields when a new number is entered. It works best for simple calculations only.

Common Use Cases

This tool is useful for homework and design projects. It helps those who need circle measurements quickly. Users can rely on it for instant calculation of circle properties.

This page does not include extra links for circle area or circumference. All needed values are provided by this calculator.