Electronics
Electronics
Circuit calculators for filters, dividers, LEDs, power, and real component values.
Use these calculators to check circuit values before breadboarding or repair.
Calculations run locally in the browser and produce practical engineering reports.
The preferred-value designer searches E-series parts instead of showing only ideal math.
Electronics tools in this category
12 tools
555 Timer Calculator
Calculate astable frequency, duty cycle, charge and discharge time, or monostable pulse width for a 555 timer.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
LC Resonance Calculator
Calculate LC resonant frequency, reactance, optional Q factor, and bandwidth from inductor and capacitor values.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
LED Resistor Calculator
Choose a series resistor for one or more LEDs and estimate resistor power dissipation.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
Ohm's Law Calculator
Find voltage, current, resistance, and power from any two known electrical values.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
Op-Amp Gain Calculator
Calculate inverting and non-inverting op-amp gain, dB gain, and expected output voltage.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
PCB Trace Width Calculator
Estimate PCB trace width from current, temperature rise, copper thickness, layer location, and trace length.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
Preferred RC Filter Designer
Find practical E12, E24, or E96 resistor and capacitor pairs for a target RC filter cutoff.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
RC High-Pass Calculator
Calculate RC high-pass cutoff, impedance, gain, phase, and response at a test frequency.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
RC Low-Pass Calculator
Calculate RC low-pass cutoff, impedance, gain, phase, and response at a test frequency.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
RLC Q Calculator
Calculate resonance, Q factor, and bandwidth for series or parallel RLC circuits.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
Voltage Divider Calculator
Calculate ideal and loaded voltage divider output, current, resistor power, and effective resistance.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks
Wheatstone Bridge Calculator
Calculate Wheatstone bridge differential output, balance point, and excitation-relative error.
- Electrical parameter calculation
- Engineering text report
- Practical values and checks