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PCB Trace Width

Calculate the required width for a PCB trace to handle a specific current. Follow IPC-2221 standards.

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Optimize Your Board Design

Don't let your pcb design fail due to overheating! Our PCB Trace Width calculator helps electrical engineers determine the exact copper dimensions needed to safely carry a target current. By inputting your desired current and the expected temperature rise, this tool ensures that your trace is wide enough to function reliably without acting as a fuse or causing thermal damage to the board substrate.

IPC-2221 Standards Compliance

Accuracy matters in hardware development. This tool uses the industry-standard IPC-2221 internal and external trace width formulas to provide precise cross-sectional area and width requirements. Whether you're building a high-power driver or a delicate signal pcb, getting the width right is the first step toward a professional, safe, and long-lasting electronic product that passes quality inspections.

Hardware Fact: PCB copper thickness is measured in "ounces" (e.g., 1oz copper), which actually represents the mass of one square foot of copper foil. A "1oz" layer is approximately 35 microns (1.4 mils) thick!

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