{"id":5395,"date":"2026-11-03T08:02:27","date_gmt":"2026-11-03T08:02:27","guid":{"rendered":"https:\/\/flj-pcb.com\/?page_id=5395"},"modified":"2026-11-03T08:31:07","modified_gmt":"2026-11-03T08:31:07","slug":"trace-width-current","status":"publish","type":"page","link":"https:\/\/flj-pcb.com\/bs\/tools\/trace-width-current\/","title":{"rendered":"PCB Trace Width Calculator"},"content":{"rendered":"\n
Home<\/a>\/<\/span>Engineering resources<\/a>\/<\/span>Trace width tool<\/span><\/div>
FLJ engineering tools<\/span>v1 \u00b7 Local calculation<\/span><\/div>

PCB Trace Width Calculator<\/h1>

Find a trace width for your current, or estimate current for an existing width. Use finished copper thickness and a selected temperature rise.<\/p>

How to use<\/a>Open calculator \u2193<\/a>Models & assumptions<\/a>Fabrication services<\/a><\/div><\/div><\/div>

How to Use the Trace Width Calculator<\/h2>\n
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  1. Choose the task.<\/strong> Select Find width<\/em> to size a trace for a known current, or Estimate current<\/em> to see the current associated with an entered width. <\/li>\n
  2. Enter the trace conditions.<\/strong> Provide finished copper thickness and the allowed temperature rise, along with the known current or width requested by your task. Check the displayed model and units. Results update as you edit.<\/li>\n
  3. Add optional details.<\/strong> Enter trace length when you want resistance, voltage drop, or power loss estimates. Review the inputs and result, then export the calculation if you need to keep or share it.<\/li>\n<\/ol>\n<\/section>
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    Calculate Trace Width or Current Capacity<\/h2>Live results \u00b7 edit any input<\/span><\/div>\n