Miscellaneous CalculatorsFree Tool

PCB Trace Width Calculator

Provided byOmni Calculatoromnicalculator.com

Do you want to know how wide your PCB traces should be? Come in to find the solution for both internal or external PC...

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Screenshot of PCB Trace Width Calculator on Omni Calculator
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About this tool

What PCB Trace Width Calculator does

The PCB Trace Width Calculator on Omni Calculator helps electronics designers determine the optimal width for printed circuit board traces. Users input parameters such as trace type (internal or external), thickness, maximum current, and desired temperature rise to receive precise width recommendations, along with calculated resistance and maximum current capacity. The tool serves both internal and external trace designs, providing a practical solution for ensuring traces can safely carry the intended current without overheating.

Step by step

How to use the Omni Calculator PCB Trace Width Calculator

  1. 1

    Select whether the trace is internal or external

  2. 2

    Enter the trace thickness value

  3. 3

    Input the maximum current the trace must carry

  4. 4

    Specify the maximum desired temperature rise

  5. 5

    View the calculated trace width and resistance results

Is it right for you

Best for

Ideal for electronics engineers, hobbyists, and PCB designers who need quick, accurate trace width calculations for both prototype and production boards.

Limitations

  • Results are estimates based on standard formulas
  • Requires known input parameters such as current and temperature rise
  • No unit switching between metric and imperial systems
Questions

PCB Trace Width Calculator FAQ

Can this calculator handle both internal and external PCB traces?
The calculator accounts for trace location (internal or external) using different empirical formulas for each, ensuring appropriate width recommendations depending on whether the trace is buried inside the board or on the surface.
What units are used for trace thickness and width?
Trace thickness and width are entered using standard measurement units, with the output providing the calculated width in consistent units suitable for PCB design.
How accurate are the temperature rise calculations?
Temperature rise estimates follow standard PCB thermal models and are accurate for typical current levels and board configurations, though actual results may vary with board layout and environmental factors.
Can I save or share my calculation results?
A share result feature is available, enabling users to export or distribute their calculation settings and outcomes for collaboration or record-keeping.
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