Voltage Divider Calculator
Calculate divided output voltage and resistor ratios for simple analog circuits.
Engineering & Technical6 indexed toolsClient-side first
Engineering & Technical tools
Solve practical electrical and technical calculations with visual references and unit-aware math.
LED Series Resistor Calculator
Calculate a safe resistor value and power rating for single-LED circuits.
Power Supply Runtime Calculator
Estimate battery runtime from capacity and expected load current.
Capacitor Charge Discharge Calculator
Estimate RC time constants and common charge thresholds for timing circuits.
Ohm’s Law & Power Triangle Calculator
Calculate voltage, current, resistance, power, and related electrical values with unit switching and visual formulas. It is ideal for students, technicians, and makers who need quick checks with clear explanations.
Resistor Color Code Calculator
Decode resistor bands visually, calculate tolerance, and switch between 4-band, 5-band, and 6-band modes. It helps electronics learners and hobbyists avoid common reading mistakes.