PCB Trace Width Calculator (IPC-2221) — Free Online Tool
Current vs trace width vs temp rise
PCB trace width per IPC-2221A: required width for current carrying capacity given temp rise + copper weight (1oz, 2oz). Internal vs external traces.
📚 Learn more
PCB Trace Width Calculator (IPC-2221A)
Calculate minimum PCB trace width for given current + allowed temperature rise. Per IPC-2221A standard. External vs internal layers, copper weight 0.5/1/2/3 oz.
How to use this tool
- 1
Current + temp rise
Trace current and allowed Δt.
- 2
Copper weight + layer
1oz/2oz, internal vs external.
- 3
Min trace width
Per IPC-2221A formula.
Frequently Asked Questions
IPC-2221A formula?
Why are internal traces worse?
1oz vs 2oz copper?
Key Takeaways
- PCB Trace Width Calculator (IPC-2221) is a free, browser-based calculator tool — current vs trace width vs temp rise.
- No signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use PCB Trace Width Calculator (IPC-2221)
- Open the tool: Launch PCB Trace Width Calculator (IPC-2221) on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
PCB Trace Width Calculator (IPC-2221) — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- Processed in your browser. Tools that need an outside service say so on the page. Page views are counted (Google Analytics).
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Calculator Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | PCB Trace Width Calculator (IPC-2221) |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use PCB Trace Width Calculator (IPC-2221)?
You should try PCB Trace Width Calculator (IPC-2221) for a quick, private way to current vs trace width vs temp rise. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.