How to Use the Bolt Circle Calculator?

1. Enter the Bolt Circle Diameter
Start by inputting the diameter of your bolt circle. This is the distance across the circle that passes through the center of all the holes. Ensure you enter a positive number.

2. Specify the Number of Holes
Input the total number of holes you want in your bolt circle. This must be at least 2 and should be a whole number.

3. Input the Hole Diameter
Enter the diameter of each individual hole in the bolt circle. This is important for visualization and can affect clearances in your design.

4. Set the Start Angle (Optional)
By default, the start angle is set to 0 degrees, which places the first hole on the positive X-axis. You can adjust this if you need the pattern to start at a different angle. The angle is measured counterclockwise from the positive X-axis.

5. Choose the Units
Select whether you want the results in millimeters (mm) or inches (in). This ensures the output matches your preferred measurement system.

6. Click "Calculate"
After entering all the required information, click the "Calculate" button. The tool will process your inputs and display the results.

7. Interpret the Results
The calculator will generate a table showing:

• Hole number
• Angle (in degrees) for each hole
• X coordinate for each hole
• Y coordinate for each hole

These coordinates are measured from the center of the bolt circle, with the positive X-axis to the right and the positive Y-axis upward.

This Bolt Circle Calculator is designed to be intuitive and user-friendly, making it accessible for both professionals and hobbyists.

It's particularly useful in metalworking, woodworking, and any project requiring precise circular hole patterns. By providing accurate coordinates, it helps eliminate errors in measurement and layout, saving time and materials in the manufacturing process.

Whether you're designing a custom flange, creating a gear, or working on any project that requires evenly spaced holes in a circle, this calculator streamlines the process and ensures accuracy.