PCB design calculators

Calculate voltage drop through traces and vias, including the return path, and find the width needed.

Estimate trace current for an allowed temperature rise, or find the width needed for your current.

Via current, barrel resistance, capacitance, inductance, impedance and thermal resistance.

Estimate the current that will melt a copper conductor for a given pulse time.

Junction temperature from thermal resistance and power dissipation.

Compare route and package delays, check skew and calculate the extra length needed.

Signal bandwidth and the trace length at which transmission-line effects matter.

Impedance, target width or gap, manufacturing tolerances and propagation delay.

Differential impedance, odd and even modes, coupling and near-end crosstalk.

Effective dielectric constant for a microstrip line, including thickness and dispersion.

Order-of-magnitude near-end crosstalk estimate for parallel traces.

Differential via impedance, stub resonance, maximum stub length and back-drill depth.

Guided wavelength from frequency, period and effective dielectric constant.

V/I/R/P, LED bias, series and parallel passives, and Pi/T attenuators.

Capacitive and inductive reactance, plus LC resonant frequency.

Frequency tolerance in hertz or parts per million, and crystal load-capacitor values.

Inductance of square, hexagonal, octagonal and circular planar spirals.

Target impedance, plane capacitance and a decoupling network impedance plot.

Through-hole pads, BGA lands, conductor fit and corner-to-corner drill sizing.

Minimum conductor spacing from voltage and construction category.

Embedded resistor dimensions and resistance.

Find JLCPCB and PCBWay stack-ups, including two-layer presets, and fill in calculator inputs.

Distance, temperature, dB, dBm, polar and angular conversions.

Copper weights, plating, laminate values, wire gauge and mechanical tables.

Wire gauge, drill and screw thread reference tables.