Electronic Components Calculators
Professional calculators for electronic component analysis, selection, and design. Calculate component values, reactance, impedance, and circuit parameters for capacitors, inductors, resistors, and more.
Passive Components
Resistors, capacitors, inductors, and transformers
Active Components
Transistors, diodes, operational amplifiers, and ICs
Electromechanical
Relays, switches, connectors, and mechanical components
Capacitor Calculator
BeginnerCalculate capacitive reactance, energy storage, series/parallel combinations, and RC time constants
Inductor Calculator
IntermediateCalculate inductive reactance, energy storage, inductance values, and RL circuit parameters
Resistor Color Code
BeginnerDecode resistor color bands and calculate resistance values with tolerance
Capacitor Code Calculator
BeginnerDecode capacitor markings and calculate capacitance values from component codes
Impedance Calculator
AdvancedCalculate complex impedance for RLC circuits and component combinations
RC Circuit Calculator
IntermediateAnalyze RC circuits including time constants, frequency response, and filter design
Component Selection Guide
Capacitors
- Ceramic: High frequency, low capacitance
- Electrolytic: High capacitance, power supply filtering
- Tantalum: Stable, compact, moderate capacitance
- Film: Precision applications, audio circuits
Inductors
- Air core: High frequency, low inductance
- Ferrite core: Medium frequency, higher inductance
- Iron core: Low frequency, high inductance
- Toroidal: Low EMI, efficient coupling
Quick Reference Formulas
Capacitive Reactance
XC = 1 / (2fC)
Inductive Reactance
XL = 2fL
RC Time Constant
τ = RC
Need Help Selecting Components?
Use our calculators to determine the right component values for your design
Start with Capacitor Calculator