Electrical & Electronics Tools
Ohm's Law Calculator
Calculate voltage, current, resistance, and power from exactly two known values.
Electrical & Electronics Tools
Online electrical and electronics calculators for voltage, current, resistance, power, circuits, batteries, components, and engineering applications.
15 tools found
Electrical & Electronics Tools
Electrical Power Calculator
Calculate DC power, resistance-based power, and optional energy.
Electrical & Electronics Tools
Series Resistor Calculator
Add up to 50 series resistors and analyze contribution, voltage drop, and power.
Electrical & Electronics Tools
Parallel Resistor Calculator
Calculate equivalent resistance, conductance, branch current, and parallel resistor power.
Electrical & Electronics Tools
Resistor Color Code Calculator
Convert 3, 4, 5, and 6-band resistor colors to values and back.
Electrical & Electronics Tools
Capacitor Code Calculator
Convert three-digit capacitor codes and values among pF, nF, µF, and F.
Electrical & Electronics Tools
LED Resistor Calculator
Calculate exact and standard LED resistors, power, and series/parallel configurations.
Electrical & Electronics Tools
Voltage Divider Calculator
Calculate divider output, target resistance, power, ratio, and loading effects.
Electrical & Electronics Tools
Battery Runtime Calculator
Estimate theoretical and practical battery runtime from capacity, load, efficiency, and configuration.
Electrical & Electronics Tools
Wire Voltage Drop Calculator
Calculate cable resistance, voltage drop, power loss, and status for copper or aluminum.
Electrical & Electronics Tools
Three-Phase Power Calculator
Calculate kW, kVA, kVAR, current, and star/delta balanced-system values.
Electrical & Electronics Tools
Transformer Turns Ratio Calculator
Calculate transformer voltage, turns, current, power, efficiency, and losses.