Electronics
Electronics calculators for series and parallel networks, voltage dividers, RC time constants, LED current limiting, RMS voltage, power factor and battery runtime.
LC Resonant Frequency Calculator
Calculate the resonant frequency of an LC tank circuit, with the wavelength i…
Decibel Gain Calculator
Convert a power or voltage ratio into decibels.
kVA to Amps Calculator
Convert apparent power in kVA to current, for single-phase or three-phase sys…
Battery Amp Hours Calculator
Convert battery energy in watt-hours to capacity in amp-hours at a given volt…
Voltage Divider Output Calculator
Calculate the output voltage of a resistive divider and the current it draws.
Resistors in Series Calculator
Add resistors in series and see the current and power a supply voltage produc…
Resistors in Parallel Calculator
Combine resistors in parallel, with conductance and the current a supply woul…
Capacitors in Series Calculator
Combine capacitors in series using the reciprocal rule — the opposite of resi…
Capacitors in Parallel Calculator
Add capacitors in parallel, with the charge and energy stored at a given volt…
Voltage Divider Calculator
Calculate the output of a two-resistor divider and the current it draws.
RC Time Constant Calculator
Calculate the RC time constant, charge times and the filter cutoff frequency …
LED Resistor Calculator
Size the current-limiting resistor an LED needs, with the power rating it mus…
RMS Voltage Calculator
Convert between peak, peak-to-peak and RMS voltage for the common waveforms.
Power Factor Calculator
Calculate power factor, phase angle and the reactive power correction would h…
Battery Amp Hour Calculator
Calculate battery runtime from amp-hours and load, with a realistic depth-of-…
Ohms to Watts Calculator
Calculate power from voltage and resistance, with current and heat output alo…
About the electronics
Electronics calculators for series and parallel networks, voltage dividers, RC time constants, LED current limiting, RMS voltage, power factor and battery runtime. There are 16 calculators in this category, and each one shows the formula it uses, works instantly as you type, and keeps your figures on your own device.
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