Hole Pattern Calculator
Input controls📏 PCB Hole Pattern Calculator – How to Use
This tool helps you calculate and visualize hole patterns for Printed Circuit Boards (PCBs). It ensures uniform hole distribution inside a rectangular area, helping you prepare precise layouts for PCB manufacturing or mechanical designs.
🔧 How it Works
Start by filling in the input fields:
Width (mm): Total width of the area where holes will be placed.
Height (mm): Total height of the area.
Number of Holes: Total number of holes you need.
Number of Lines: Number of rows the holes will be arranged in.
(The tool automatically shows valid combinations based on your total hole count.)
Distance Center-Hole to Edge (mm): Margin from the edges of the rectangle to the center of the nearest hole.
🎯 What Happens When You Click “Calculate”
The tool calculates:
Exact horizontal spacing between columns.
Exact vertical spacing between lines.
It displays a scaled drawing of the rectangular area with red circles representing the holes.
Spacing values (in mm) are shown below the drawing for reference.
💾 Downloading the DXF File
Once you’ve calculated the pattern, a “Download DXF” button will appear.
Click it to export a DXF file containing:
A rectangle representing your PCB area.
Hole positions as properly spaced 1mm radius circles.
This DXF file can be opened in tools like AutoCAD, FreeCAD, SolidWorks, or eDrawings for mechanical design, documentation, or further PCB integration.
🔎 Why Use This Tool?
Precise hole positioning is essential in PCB design for:
Connectors and headers
Mounting holes
Vias and through-hole components
Mechanical enclosures
Alignment and fixture design
This calculator lets you verify spacing and fit quickly before integrating into your PCB layout or CAD workflow — saving time and reducing errors.
Check our mitred bend calculator here.
