Electronics and Embedded Tools

Ohm's Law Calculator

Compute voltage, current, or resistance from any two known values.

Power Calculator

Calculate electrical power using V*I, I^2*R, or V^2/R formulas.

Resistor Color Code Decoder

Decode 4-band resistor value and tolerance from selected color bands.

LED Resistor Calculator

Calculate required series resistor and resistor wattage for LED circuits.

Voltage Divider Calculator

Calculate output voltage and divider current for two-resistor divider networks.

RC Time Constant Calculator

Calculate RC time constant tau and approximate settling time.

Capacitor Charge and Discharge Calculator

Compute capacitor voltage at a given time during charge or discharge.

555 Timer Calculator

Calculate astable frequency/duty or monostable pulse width for 555 timer circuits.

ADC and DAC Converter Calculator

Calculate ADC code from analog input and DAC output from digital code.

PWM Duty and Frequency Calculator

Convert between period/on-time and frequency/duty cycle representations.

Motor Full Load Current Calculator

Estimate motor full-load current from power, voltage, power factor, and efficiency.

Power Factor Correction Calculator

Calculate required capacitor bank size to improve power factor.

Short Circuit Current Estimator

Estimate transformer-based short-circuit current from rating and impedance.

UPS Battery Backup Time Calculator

Estimate UPS backup duration from battery voltage, capacity, load, and efficiency.

Cable Conduit Fill Calculator

Estimate cable count inside conduit from diameters and fill percentage.

Signal Attenuation dB Calculator

Calculate attenuation in dB from input and output power values.

Transformer Sizing Calculator

Estimate transformer kVA and full-load current from connected load, power factor, and utilization.

Cable Tray Fill Calculator

Estimate allowable cable count and fill percentage for rectangular cable trays.

Earthing Grid Resistance Estimator

Estimate grounding resistance from grid and rod parameters using simplified equations.

Harmonic Distortion THD Calculator

Compute total harmonic distortion from fundamental and harmonic magnitudes.

Generator Sizing Calculator

Estimate generator kVA from running load, power factor, starting factor, and derating.

Arc Flash Boundary Estimator

Estimate simplified arc-flash boundary distance from voltage, current, and arc duration.

Solar PV System Sizing Calculator

Estimate panel count, inverter size, and battery storage from daily energy demand and sun hours.

Circuit Breaker Sizing Helper

Suggest breaker size from load current and standard derating margins.

Earthing Conductor Sizing Calculator

Estimate grounding conductor area from fault current and fault-clearing time.