Trace Width Calculator for KiCad
The Perfect Companion for KiCad Users
KiCad is an excellent free EDA tool, but it lacks built-in trace width calculations. Our free calculator complements KiCad perfectly, providing IPC-2221 trace width, via current, and impedance calculations without leaving your browser.
KiCad excels at schematic capture, PCB layout, and routing. But calculating the right trace width for your current requirements needs external tools or plugins.
Calculate trace widths, via currents, and impedances in your browser, then apply the values directly to your KiCad design rules. No plugins required.
KiCad vs TraceWidthCalculator
| Feature | KiCad | TraceWidthCalculator |
|---|---|---|
| Trace Width Calculator | Via plugins | Built-in, instant |
| Via Current Calculator | Not available | Full support |
| Impedance Calculator | Via plugins | Built-in |
| Differential Pairs | Routing support | Calculation tool |
| No Installation | Requires install | Browser-based |
| Cost | Free (open source) | Free |
KiCad Design Workflow
Define Requirements
Determine current, voltage, and signal speed requirements for your design
Calculate Here
Use TraceWidthCalculator to determine trace widths and impedances
Set KiCad Rules
Apply calculated values to KiCad design rules and net classes
Route in KiCad
Complete your layout with confidence in your trace specifications
Tips for KiCad Users
Design Rules
After calculating trace widths, set up net classes in KiCad with the appropriate track widths. This ensures consistent routing throughout your design.
Power Nets
Use our via current calculator to properly size vias for power distribution. KiCad's via stitching feature combined with proper via sizing ensures reliable power delivery.
Controlled Impedance
Calculate impedance here, then use KiCad's differential pair routing and length matching features to implement high-speed signals properly.
About KiCad
KiCad is a free, open-source electronics design automation (EDA) suite developed by CERN and a worldwide community of contributors. It's become the go-to choice for hobbyists, students, and professionals who want powerful PCB design tools without expensive licenses.
KiCad excels at schematic capture, PCB layout, and generates industry-standard output files. However, it focuses on design and manufacturing rather than engineering calculations.
TraceWidthCalculator fills this gap by providing the engineering calculations that complement KiCad's design capabilities.
KiCad + TraceWidthCalculator
Start Calculating for Your KiCad Project
Free, instant calculations to complement your KiCad workflow. No plugins, no installation—just accurate IPC-2221 calculations.
Frequently Asked Questions
Does this replace KiCad?
No! This complements KiCad. Use KiCad for schematic and layout, use TraceWidthCalculator for engineering calculations.
Why doesn't KiCad have this built-in?
KiCad focuses on design and manufacturing output. Engineering calculations are typically done with separate tools or plugins.
Can I use the results directly in KiCad?
Yes! Copy calculated trace widths and set them in KiCad's design rules or net class settings.
Is KiCad really free?
Yes, KiCad is free and open-source. Our calculator is also free. Together they provide a complete professional toolset at zero cost.
Related Tools & Resources
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