CALCULATORS / ELECTRICAL
DC and basic AC circuits
Ideal or parameterized lumped components.
Ohm's law calculator
two of voltage, current and resistance → remaining quantity, power
Open the calculator ↗LIVE / CALCULATORSeries and parallel resistance calculator
resistor values, connection pattern → equivalent resistance, tolerance bounds
Open the calculator ↗LIVE / CALCULATORLoaded voltage divider calculator
resistors, input voltage, load impedance → output voltage, loading error, current
Open the calculator ↗LIVE / SIZING CALCULATORLED series-resistor sizing calculator
supply and forward-voltage bounds, target current, resistor tolerance → resistance range, current bounds, resistor power
Open the calculator ↗LIVE / CALCULATORRC timing and charging calculator
resistance, capacitance, initial/final voltages → time constant, charge curve, threshold time
Open the calculator ↗LIVE / CALCULATORRL current transient calculator
resistance, inductance, source, initial current → current rise/decay, stored energy
Open the calculator ↗LIVE / CALCULATORRLC resonance and damping calculator
R, L, C, topology → resonant frequency, damping, bandwidth
Open the calculator ↗LIVE / CALCULATORComplex AC impedance calculator
frequency, component values, topology → impedance magnitude and phase
Open the calculator ↗LIVE / CALCULATORAC real, reactive and apparent power calculator
RMS voltage/current, phase or power factor → P, Q, S, power factor
Open the calculator ↗LIVE / CALCULATORBalanced three-phase power calculator
line voltage, current, connection, power factor → power, phase/line relationships
Open the calculator ↗LIVE / CALCULATORCapacitor ripple and droop calculator
current waveform, capacitance, ESR, frequency → voltage ripple, RMS current, ESR heating
Open the calculator ↗LIVE / ESTIMATORResistor power and derating screening calculator
voltage/current range, resistance, ambient, cited derating curve → dissipation range, selected-rating utilization
Open the calculator ↗LIVE / ESTIMATORZener shunt-regulator screening calculator
input range, load, zener voltage/current bounds → series resistor, zener and resistor dissipation
Open the calculator ↗