PCB Design Calculators
Complete Engineering Toolkit
Professional-grade PCB design calculators based on IPC standards. All tools are free to use with no registration required.
Current & Power
Trace Width Calculator
Calculate minimum trace width for your current requirements based on IPC-2221
Current Capacity Calculator
Determine maximum current a trace can safely carry
Via Current Calculator
Calculate current capacity of single vias and via arrays
Impedance & Signals
Pads & Vias
Safety & Standards
Manufacturing
Advanced Analysis
Industry Standards Supported
Why Use Our Calculators?
Standards Compliant
Calculations based on industry standards like IPC-2221, IPC-2152, and IEC 60664-1
Instant Results
Real-time calculations as you type. No page reloads or waiting for results
100% Free
No registration, no limits, no ads. Use all calculators freely for your projects
Definitions and References
A wire harness is an organized bundle of wires, terminals, and protective coverings used to route power and signals through equipment. Cable assembly refers to prepared and terminated cables used for a specific interconnect purpose, and those definitions matter because PCB calculators often sit upstream of real connector and harness decisions.
Frequently Asked Questions
Which calculator should I open first?
Start with the trace width calculator when current and copper heating are the main constraint, then move to impedance, creepage, or via tools as the layout problem becomes more specific.
Are these calculators based on recognized standards?
Yes. The toolkit references IPC and IEC guidance where appropriate, then adapts the workflow to practical PCB design tasks.
Can one calculator replace a full stackup review?
No. The tools accelerate estimation, but controlled impedance and manufacturing decisions still need your actual laminate, copper, and fabricator limits.
Why are wire harness and cable assembly definitions relevant here?
Many boards connect into larger electromechanical products, so PCB routing decisions often influence connector, cable assembly, and harness choices.
Do the tools support both current and signal-integrity problems?
Yes. The toolkit covers current capacity, impedance control, spacing, panelization, and other layout tasks used across power and high-speed designs.
Start Designing
Begin with our most popular tool - the PCB Trace Width Calculator.
Open Trace Width Calculator