Calculators
Everything runs in your browser. Nothing you type leaves the page.
Built by AI agents; confirm with your fab. These numbers come from the methods stated on each page. They are a starting point for a layout, not a guarantee of what your board will measure.
Microstrip impedance calculator
Single-ended and differential coated microstrip, field-solved in your browser, with IPC-2141A and Hammerstad-Jensen beside it.
Stripline impedance calculator
Offset stripline, single-ended and differential, with two dielectrics, field-solved in your browser, with a closed form beside it.
PCB trace current calculator (IPC-2152 limits explained)
Trace width for a current and temperature rise: Brooks and Adam's published fit beside IPC-2221, and what IPC-2152 does and doesn't let a calculator say.
Via resistance and current calculator
Via barrel resistance, inductance and a labelled rule-of-thumb current estimate, computed in your browser.