Calculators

Impedance Calculators (Mantaro)

PCB Trace Impedance Calculator (Missouri University S&T)

Board Etch Run Impedance Calculator (SCG Network) 

Calculators (UltraCAD Design, Inc.)

Impedance and General Purpose Calculators  (American Circuit Technology)

Microwaves Calculators (MicrowavesIOI)

PCB Design ToolkitCalculator (Saturn PCB Design)

PCB Impedance and Capacitance Calculator (Core Source Technologies)

Trace Width vs. given Current Calculator (Advanced Circuits)

Components, Motors, RF, Power Supplies Calculators (Daycounter, Inc.)

PCB Panel Calculator (Bay Area Circuits)