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Electronics and circuits calculators 💡 calculators
Explore 13 free electronics and circuits calculators 💡 calculators. Calculate in your browser with clear inputs, worked examples, and transparent methods.
13 calculators available
- Capacitance for Ideal Stored Energy
Calculate ideal capacitance from a positive stored-energy target and voltage magnitude.
- Capacitor Charge, Voltage & Stored Energy
Relate positive capacitance, voltage, charge and energy in an ideal linear capacitor.
- Capacitor Reactance & Angular Frequency
Relate positive capacitance and frequency to capacitive-reactance magnitude in an ideal AC model.
- Cell EMF, Terminal Voltage & Internal Resistance
Relate a cell’s ideal EMF, internal resistance and a positive resistive load during discharge.
- DC Voltage–Current Power & Resistance Ratio
Calculate signed DC power and the voltage-to-current ratio at a nonzero operating point.
- First-Order RC & RL Corner Frequency
Find the ideal first-order corner frequency for a selected RC or RL circuit model.
- Ideal LC Natural Resonance Frequency
Calculate the natural frequency of an ideal inductor-capacitor model and solve for either component.
- Ideal Transformer Turns, Voltage & Current Ratio
Explore ideal transformer voltage and load-current magnitudes from a positive turns ratio.
- Inductor Current & Stored Magnetic Energy
Calculate stored energy in a linear ideal inductor from positive inductance and signed current.
- Inductor Reactance & Susceptance Magnitude
Calculate ideal inductive-reactance magnitude and its reciprocal at a positive frequency.
- Resonant Bandwidth, Q & Cutoff Frequencies
Relate bandwidth, quality factor and cutoff frequencies in the retained second-order resonant model.
- Single-Phase RMS Voltage, Current & Real Power
Calculate real electrical power using RMS voltage, RMS current and a supplied power factor.
- Watt-Hour Energy from Charge or Power & Time
Calculate energy in two independent ways: constant voltage times charge, or constant power times duration.