Electrical
Professional electrical engineering calculators for power systems, cable sizing, voltage drop, and short circuit analysis. Based on IEC and NEC standards.
52 calculators
Watt to Amps Converter
Calculate current (A) using power (W) and voltage (V)
Amps to Watt Converter
Calculate power (W) using current (A) and voltage (V)
Amps to VA Converter
Calculate apparent power (VA) using current (A) and voltage (V)
kW to Amps Converter
Calculate current (A) using power (kW), voltage (V), and power factor
VA to Amps Converter
Calculate current (A) using apparent power (VA) and voltage (V)
Watt to Volt Converter
Calculate voltage (V) using power (W) and current (A)
Watt-Volt-Amp-Ohm Calculator
Calculate watts, volts, amps, and ohms using Ohm's Law. Enter any 2 values
Amps to kW Converter
Calculate power (kW) using current (A), voltage (V), and power factor
kVA to kW Converter
Calculate active power (kW) using apparent power (kVA) and power factor
kWh to Watt Converter
Convert kilowatt-hours (kWh) energy consumption to watts (W) power
Voltage Divider Calculator
Calculate voltage divider circuit parameters using Ohm's Law
Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law
Short Circuit Calculator
Calculate short circuit currents for electrical systems
Cable Sizing Calculator
Select appropriate cable size based on current rating and installation conditions
Voltage Drop Calculator
Calculate voltage drop in electrical cables based on current, length, and cable properties
Power Factor Calculator
Calculate power factor, apparent power, and capacitor correction recommendations
Volt to Watt Calculator
Convert voltage (V) to power (W). Supports DC, AC single-phase, and AC three-phase systems
Watt to kWh Calculator
Convert power in watts (W) to energy in kilowatt-hours (kWh). Calculate total energy consumption
kWh to kW Converter
Convert energy (kilowatt-hours) to power (kilowatts) over time
Volt to Kilowatt (kW) Calculator
Convert voltage to power (kW) for DC and AC systems. Supports single-phase and three-phase with power factor
Watt to VA Calculator
Convert real power (W) to apparent power (VA). Calculate reactive power, phase angle, and power factor
Watt to kVA Calculator
Convert real power (watts) to apparent power (kVA) using power factor
VA to kW Calculator
Convert apparent power (VA) to real power (kW) using power factor
kW to VA Calculator
Convert real power (kW) to apparent power (VA) using power factor
kVA to Watt Calculator
Convert apparent power (kVA) to real power (watts) using power factor for electrical system calculations
Volt to Amp Calculator
Convert voltage to current (amperes) using power and resistance for DC and AC circuits
Volt to Joule Calculator
Convert voltage to electrical energy (joules). Calculate energy stored in capacitors and batteries
Joule to Volt Calculator
Convert energy (joules) to voltage using electric charge for capacitor and battery calculations
Watt to Joule Calculator
Convert power (watts) to energy (joules) over time. Calculate energy consumption for electrical devices
Volt to Electron-Volt (eV) Calculator
Convert voltage to electron-volts. Essential for quantum physics, particle energy, and photon calculations
Transformer Sizing Calculator
Calculate required transformer capacity based on load power and expansion needs
Power Calculator
Calculate electrical power for DC circuits and AC systems using voltage, current, resistance, or power factor
kW to kVA Converter
Convert active power (kW) to apparent power (kVA)
mAh to Wh Converter
Convert battery capacity (mAh) to energy (Wh) using voltage
Wh to mAh Converter
Convert battery energy (Wh) to capacity (mAh) using voltage
Joule to Watt Converter
Convert energy (Joules) to power (Watts) over time
Resistor Color Code Calculator
Decode resistor color bands and calculate resistance values
LED Resistor Calculator
Calculate the appropriate resistor value for LED circuits
Capacitor Energy Calculator
Calculate energy stored in capacitors, charge, and discharge characteristics
Inductor Energy Calculator
Calculate energy stored in inductors, magnetic flux, and voltage spikes during discharge
Battery Life Calculator
Calculate battery runtime and capacity requirements
Amps to Volts Calculator
Convert current (amps) to voltage using power or resistance with Ohm's Law formulas
VA to Watts Calculator
Convert apparent power (VA) to real power (watts) using power factor
kW to kWh Calculator
Convert power (kW) to energy (kWh) over time with daily, monthly, and yearly consumption
Amps to kVA Calculator
Calculate apparent power (kVA) from current (amps) and voltage for single and three-phase systems
Energy Consumption Calculator
Calculate daily, monthly, and yearly energy consumption from power and usage time
kVA to Amps Converter
Convert apparent power (kVA) to current (Amps)
Panel Schedule Builder
Create NEC 2023 compliant electrical panel schedules with automatic load calculations, breaker sizing, and wire selection. Professional PDF export included.
AWG to MM Converter
Convert American Wire Gauge (AWG) to metric measurements including diameter, area, resistance, and ampacity based on ASTM B258 and NEC 2023
Lumen to Watt Converter
Convert between lumens and watts for different light source types (LED, CFL, incandescent, halogen). Calculate energy savings and cost comparisons with efficacy ratings.
Lux to Lumen Converter
Convert between lux (illuminance) and lumens (luminous flux) using surface area. Calculate lighting requirements based on EN 12464-1 and IES standards.
Candela to Lumen Converter
Convert between candela (luminous intensity) and lumens (luminous flux) using solid angles. Supports isotropic, hemisphere, and custom beam angle patterns.