Pevlika

PCB Trace Width Calculator

Minimum PCB trace width for a current (IPC-2221).

Runs in your browser — nothing is uploaded
Layer

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For learning, hobby and prototyping use. Not professional electrical design advice — follow applicable codes and standards.

How to use PCB Trace Width Calculator

  1. Enter your values — the unit for each field is shown next to it.
  2. The result updates instantly as you type.
  3. Copy the results, or change inputs to compare scenarios.

Formula & assumptions

I = k × ΔT^0.44 × A^0.725 (k = 0.048 external, 0.024 internal; A in mil²)

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