Resistor Calculator
Calculate equivalent values for resistors, capacitors, and inductors in series or parallel. Essential for electronics design and education.
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Calculate Series and Parallel Circuits
Whether you're designing a circuit or solving homework problems, our Resistor Calculator instantly computes equivalent values for resistors, capacitors, and inductors. Simply select your component type, connection method, and enter your values.
How Series and Parallel Calculations Work
In series circuits, components are connected end-to-end, so current flows through each one. In parallel circuits, components share the same two nodes, so voltage is the same across each. The formulas differ for each configuration and component type.
Key Formulas
Series: R_eq = R₁ + R₂ + ... | Parallel: 1/R_eq = 1/R₁ + 1/R₂ + ...Why Use This Calculator?
Multi-Component Support
Works with resistors, capacitors, and inductors.
Automatic Unit Conversion
Displays results in appropriate units (Ω, kΩ, MΩ, etc.).
Step-by-Step Solutions
See the complete calculation breakdown.
How to Use
Common Applications
Circuit Design
Find the right combination to achieve target values.
Education
Learn and verify series/parallel calculations.
Troubleshooting
Calculate expected values for circuit testing.
Component Selection
Combine available parts to get needed values.
Frequently Asked Questions
Capacitors store charge differently than resistors dissipate energy. In parallel, capacitors combine their charge storage (add directly). In series, the effective capacitance decreases because charge must be shared.