PCB Trace Width Calculator

Calculate minimum PCB trace width for given current (IPC-2221). Check voltage drop and power loss.

Current (A)

Copper Thickness (oz)

Max Temp Rise (°C)

Ambient Temp (°C)

Trace Length (mm)

Max Voltage Drop (mV)

IPC-2221: I = k×ΔT^0.44×A^0.725

Internal layer: k=0.024 | External: k=0.048