Electronics and Embedded Online Tools
Free online electronics and embedded including JSON formatter, text compare, hash generator, Base64 encoder, URL parser, and more. With 25 IO Tools helps you quickly format, convert, encode, and work with data directly in your browser. Most tools run locally for speed and privacy, and most tool inputs are not stored on our servers. Some features that require storage (for example, Quick Paste) store data only to provide that feature. Built to keep useful tools simple, fast, and all in one place - dmlub2Ro
Electronics and Embedded
25 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.