Radius Calculator: Clear and Accurate Circle Measurements

Your All-in-One Circle Measurement Tool

This tool helps you find circle measurements. You can enter a value for a diameter, circumference, or area. The calculator then shows the radius along with other measures.

How to Use This Tool

Enter a positive number in the box. Choose the type of value you have. Then click the Calculate button.

Step-by-Step Instructions

1. Select a value type. You can choose diameter, circumference, or area.

2. Type a positive number in the input field.

3. Click the Calculate button.

4. Read the results below, which include the radius, diameter, circumference, and area.

Input Fields Explained

The radio buttons let you choose what you want to use. Pick the value you have. The number you enter must be positive.

The input box shows a sample text. It reminds you of the type of value to enter. The unit label changes with your selection.

Understanding the Output

The tool shows clear results. The radius is half of the diameter. The circumference shows the edge length.

The area gives the space inside the circle. This helps you check your work.

Limitations and Special Notes

Use only positive numbers. Zero or negative numbers do not work. The tool uses simple math. It is not a substitute for complex software.

Common Use Cases

Students use this tool for math homework. Engineers use it for design tasks. It helps in crafts and construction projects.

Try the radius calculator to save time and avoid math confusion.