MagicKit.ai

PCB Trace Width Calculator

Calculate PCB trace width for your current requirements using IPC-2221 standard. Design reliable circuit boards with proper conductor sizing.

How to Calculate PCB Trace Width

  1. 1 Enter the current your trace needs to carry in amps
  2. 2 Set the maximum temperature rise you can tolerate
  3. 3 Select the copper weight (thickness) of your PCB
  4. 4 Choose whether the trace is on an internal or external layer
  5. 5 View the calculated trace width and resistance values

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Last updated: January 15, 2026 · v2.1