PCB Trace Width Calculator

Calculate minimum PCB trace width for a given current using IPC-2221 standards.

Maximum current through the trace.
A
Allowable temperature rise above ambient.
°C
Copper thickness in oz/ft² (1 oz = 35µm).
oz
1 for external layer, 0 for internal layer.

Results

Min Trace Width-mil
Min Trace Width-mm
References: IPC-2221B Section 6.2; IPC-2152; Saturn PCB Toolkit