Engineering Tools

A free collection of calculators for electronics design, provided by PCBHub.

Electronics

Calculates output voltage in a resistor divider (Vout = Vin × R2 / (R1 + R2)).

Quickly calculate voltage, current, resistance, or power using V = I × R.

Choose the correct resistor for an LED based on supply voltage and current.

Estimate component heat dissipation for resistors, transistors, or regulators.

Design low-pass or high-pass RC filters and calculate cutoff frequency.

Check input-output voltage differences for LDO regulators or converters.

Calculates the minimum trace width for a given current and copper thickness (IPC-2221).

Estimates how much current vias can safely carry.

Computes the characteristic impedance of microstrip or stripline traces.

Build and validate PCB layer stacks — copper, dielectric, and thickness setup.

Estimates pad area needed for effective heat dissipation of power devices.

Checks required isolation distances according to safety standards.

Convert between units: mm ↔ mils ↔ inches, V ↔ A ↔ W ↔ Ω, and more.

Calculates LC circuit resonance frequency (f = 1 / 2π√(LC)).

Computes line length for a given signal phase or wavelength (e.g. λ/4).

Designs T- and Pi-attenuators for RF circuits with chosen impedance.

Estimates junction temperature based on power dissipation and thermal resistance.

Calculates temperature rise of copper area versus dissipated power.