PCB Trace Width Calculator

Calculate pcb trace width with this free online tool

PCB Trace Width Calculator

IPC-2221 standard trace width for current carrying capacity

Current (A)

Copper Weight (oz)

Temp Rise (°C)

Based on IPC-2221 standard. Internal traces = inside PCB layers, External = top/bottom layers.

Required Trace Width (IPC-2221)

External Layer

11.9 mil

0.302 mm

Internal Layer

30.9 mil

0.786 mm

Parameters

Copper thickness: 1.37 mil (34.8 μm)

Cross-section area (ext): 16.30 sq mil

Cross-section area (int): 42.39 sq mil

Add 10–20% safety margin for production variability. Vias and thermal relays may require additional width.

Pcb Trace Width Calculator — free, fast, and works in your browser. No setup required, just open and start using it.

Key Features

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Free pcb trace width calculator with instant results

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No registration or signup required

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Professional-grade pcb trace width calculator tool

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Works on all devices and browsers

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Privacy-first: all processing happens in your browser

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Unlimited usage with no restrictions

How to Use PCB Trace Width Calculator

Enter Your Data

Input your values or data into the pcb trace width calculator tool fields

Configure Options

Adjust any optional settings or parameters for your specific needs

Get Instant Results

The tool automatically calculates and displays results in real-time

Copy or Export

Copy the results to clipboard or use them directly in your project

Repeat as Needed

Run the tool again with different inputs — unlimited usage, completely free

Use Cases

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Use pcb trace width calculator for personal projects

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Professional and academic applications

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Quick reference and verification

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Everyday productivity and convenience

Frequently Asked Questions

Is the PCB Trace Width Calculator free to use?

Yes, the PCB Trace Width Calculator is completely free with no registration required. Use it as many times as you need.

Do I need to create an account?

No account needed. All tools work instantly in your browser without any signup or login.

Is my data safe?

Absolutely. All processing happens locally in your browser. Your data is never sent to any server.

Does the PCB Trace Width Calculator work on mobile?

Yes, the tool is fully responsive and works on phones, tablets, and desktop computers.

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