Digital & PCB
PCB Trace Width Calculator (IPC-2221)
Prevent trace overheating using the industry-standard IPC-2221 formula for 1oz and 2oz copper.
Input Parameters
A
°C
oz
Calculation Results
External Layer Width (mils)
—
Internal Layer Width (mils)
—
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Formula & Theory
I = k \times \Delta T^{0.44} \times A^{0.725}
Frequently Asked Questions
Q: What is 1 oz copper thickness?
1 oz copper corresponds to approximately 1.37 mils or 35 micrometers (μm) thickness on a PCB.