PCB Trace Width Calculator

When designing signal traces, the width doesn’t really matter because there won’t be any current or high voltages on it. However, once you start to move some power, you want to make sure you don’t overload your traces. We created this calculator based on the IPC-2221A standards to make it so you can make informed, wise decisions about the size of traces you need. Just put in the amount of current you expect, your PCB attributes, and the environment you anticipate, and you’ll get some helpful information on how wide your traces should be, the expected trace resistance, voltage and power loss, and what temperature rises you should expect to see. Interesting and useful - a powerful combination!