Every calculator from pcbtools.xyz in one place.

Size copper widths by current, copper weight, and temperature rise targets.

Solve for voltage, current, resistance, or power with contextual tips.

Dial in resistor ratios, equivalent resistance, and sense-node loading guidance.

Estimate runtime with duty-cycle aware loads and chemistry derating.

Stack up to 20 circuits with min/typ/max/inrush currents and rank the hottest rails.

Convert between Celsius and Fahrenheit with component derating context.

Cross-convert imperial and metric dimensions for panel and enclosure work.

Pick the exact series resistor, power rating, and E24 recommendation.

Translate R and C picks into τ, cutoff frequencies, and charge milestones.

See stored energy, coulombs, and ride-through potential instantly.

Convert F/µF/nF/pF/fF without losing track of BOM math or IEC prefixes.

Normalize H/µH/nH picks so filter chokes and RF coils are comparable.

Apply λ = c/f to link antenna lengths, clocks, and enclosure limits.

Blend up to six resistors, equivalent Req, and branch current shares.

Solve microstrip/stripline geometry with Hammerstad math plus stack visuals.

Pull IPC-2221 clearance minima by voltage band, unit system, and coating choice.

Decode multiband resistors per IEC 60062 with tolerance + ppm guidance.

Flip between dB, power, and voltage ratios using 10·log₁₀/20·log₁₀ math.

Compare Xc and Xl across frequencies to line up filters and resonant tanks.

Engineering notes plugin for KiCad 9+ with @REF linking, BOM import, and PDF export.