Electricity Bill Calculator
Calculate monthly and annual electricity consumption cost based on power usage and rates (kWh)
Ohms Law Calculator
Calculate voltage, current, and resistance using Ohm's Law (V=IR) for electrical circuits
Electrical Power Calculator
Calculate electrical power in watts using voltage and current (P=VI, P=I²R, P=V²/R)
Resistor Color Code Calculator
Calculate resistor value and tolerance from color bands (4-band, 5-band, 6-band)
LED Resistor Calculator
Calculate current limiting resistor value for LED circuits and arrays
Battery Life Calculator
Calculate battery runtime and life based on capacity (mAh/Ah) and load current
Voltage Divider Calculator
Calculate voltage division in resistor circuits and determine output voltage.
Series & Parallel Resistors Calculator
Calculate total equivalent resistance for resistors in series or parallel configurations
Wire Gauge Calculator
Calculate the appropriate wire gauge for electrical installations.
Voltage Drop Calculator
Calculate voltage drop in electrical cables and wires based on length, current, and resistance
Three Phase Calculator
Calculate power, current, and voltage for 3-phase electrical systems (Star/Delta)
555 Timer Calculator
Calculate resistor and capacitor values for 555 timer circuits (astable/monostable modes)
Solar Panel Calculator
Calculate required number and capacity of solar panels for photovoltaic system design
Electrical Load Calculator
Calculate total electrical load, power demand, and sizing for residential/commercial buildings
Capacitor Energy Calculator
Calculate energy stored in a capacitor.
Three-Phase Power Calculator
Calculate active, apparent, and reactive power in three-phase systems.
Cable Size Calculator
Calculate appropriate cable size based on current and distance.
Series/Parallel Resistance Calculator
Calculate equivalent resistance for series or parallel circuit.
Battery Capacity Calculator
Calculate battery capacity and runtime.
Solar Panel Sizing Calculator
Calculate number of solar panels needed.
Voltage Divider Calculator
Calculate voltage division in resistor circuits and determine output voltage.
LED Resistor Calculator
Calculate the required resistor value to safely operate an LED.
Battery Life Calculator
Calculate battery life, total energy, and watt-hours from capacity and load.
Capacitor Calculator
Calculate capacitance, charge, and stored energy in capacitors (Q=CV, E=½CV²)
Transformer Calculator
Calculate transformer turns ratio, voltage, and current transformation (Vp/Vs = Np/Ns)
AC Circuit Calculator
Calculate impedance, phase angle, and power in AC circuits (RLC analysis)
Impedance Calculator
Calculate total impedance from resistance and reactance in AC circuits (Z = √(R²+X²))
Power Factor Calculator
Calculate power factor and required capacitance for power factor correction (PF = cosφ)
Op-Amp Calculator
Calculate gain and resistor values for op-amp circuits (inverting/non-inverting)
LM317 Voltage Regulator Calculator
Calculate resistor values for desired output voltage from LM317 adjustable regulator
Frequency Calculator
Calculate frequency, period, and wavelength for electrical signals (f = 1/T)
Electric Motor Calculator
Calculate motor power, current, efficiency, and torque for AC/DC motors (HP to kW)
Inductor Energy Calculator
Calculate energy stored in an inductor.
RC Circuit Time Constant Calculator
Calculate time constant of an RC circuit.
RL Circuit Time Constant Calculator
Calculate time constant of an RL circuit.
Electric Motor Power Calculator
Calculate power, torque, and efficiency of an electric motor.
Capacitor Code Calculator
Convert 3-digit capacitor code to capacitance value.
Extended Ohms Law Calculator
Calculate voltage, current, resistance, and power.
Battery Runtime Calculator
Calculate battery runtime.
Energy Consumption Calculator
Calculate energy consumption of devices.
Three Phase Power Calculator
Calculate three-phase electrical power.
Cable Voltage Drop Calculator
Calculate voltage drop in cable.
Breaker Sizing Calculator
Calculate appropriate breaker size.
Cable Size Calculator
Calculate proper cable size based on current and distance.
Parallel Resistance Calculator
Calculate equivalent resistance of parallel resistors.
Advanced LED Resistor
Calculate resistor for multiple LEDs in series/parallel.
Generator Sizing Calculator
Calculate proper generator size for your needs.
LED Resistor Calculator
Calculate required resistor for LED.
Transformer Calculator
Calculate transformer output voltage, turns ratio, and current ratio.
Capacitor Energy Calculator
Calculate stored energy, charge, and electric field in a capacitor.
Wire Gauge Calculator
Calculate the appropriate wire gauge for electrical installations.
Power Factor Calculator
Calculate power factor, reactive power, and phase angle from real and apparent power.
Inductor Calculator
Calculate inductance value and stored energy in inductors (L, E=½LI²)
Reactance Calculator
Calculate capacitive and inductive reactance for capacitors and inductors (Xc, Xl)
Resonance Calculator
Calculate resonance frequency and Q-factor for LC resonant circuits (f = 1/2π√LC)
Decibel Calculator
Calculate decibel levels, gain, and loss for power and voltage signals (dB, dBm, dBW)
PCB Trace Width Calculator
Calculate copper trace width for PCB boards based on current and temperature rise (IPC-2221)
Extended Voltage Divider
Calculate voltage divider output.
Extended LED Resistor Calculator
Calculate LED resistor for multiple currents.
Wire Ampacity Calculator
Calculate maximum wire ampacity.
Solar Panel Sizing Calculator
Calculate solar panels needed.
Resistor Network Calculator
Calculate equivalent resistance for series/parallel.
Transformer Ratio Calculator
Calculate transformer turns ratio.
Solar String Calculator
Calculate solar panel string size.
LED Strip Power Calculator
Calculate LED strip power supply needs.
Motor Current Calculator
Calculate electric motor current draw.
Resistor Voltage Divider Calculator
Calculate output voltage of resistor divider.
UPS Sizing Calculator
Calculate appropriate UPS size.
Power Factor Correction Calculator
Calculate capacitors for power factor correction.
Battery Series/Parallel Calculator
Calculate voltage and capacity for battery connections.
RC Circuit Calculator
Calculate RC circuit time constant.
RL Circuit Calculator
Calculate RL circuit time constant.
Transformer Turns Ratio
Calculate transformer turns ratio and voltage.
DC Motor Calculator
Calculate DC motor speed and torque.
Capacitor Energy Calculator
Calculate energy stored in a capacitor.
Wire Resistance Calculator
Calculate wire resistance based on material, length, and area.
Three-Phase Power Calculator
Calculate power in a three-phase circuit.
Transformer Ratio Calculator
Calculate transformer voltage ratio.
Wire Ampacity Calculator
Calculate current carrying capacity of wire.
Parallel Resistance Calculator
Calculate equivalent resistance in parallel.
Circuit Breaker Size Calculator
Calculate appropriate circuit breaker size.
Battery Capacity and Runtime Calculator
Calculate device runtime from battery.
Electrical Cable Sizing Calculator
Calculate appropriate cable size.
Antenna Calculator
Calculate antenna dimensions and length based on frequency (dipole, monopole, Yagi)
Inrush Current Calculator
Calculate initial inrush current surge at startup for motors, transformers, and capacitors
Extended Capacitor Energy
Calculate capacitor energy and charge.
Inductor Reactance Calculator
Calculate inductor reactance at a frequency.
Transformer Turns Ratio
Calculate transformer turns ratio.
Power Factor Correction
Calculate capacitor needed for power factor correction.
Series Impedance Calculator
Calculate series RLC circuit impedance.
Motor Efficiency Calculator
Calculate electric motor efficiency.
Fuse Rating Calculator
Calculate appropriate fuse rating.
Generator Load Calculator
Calculate required generator size.
Capacitor Bank Calculator
Calculate capacitor bank for power factor correction.
Earth Resistance Calculator
Calculate earthing system resistance.
DC Wire Sizing Calculator
Calculate appropriate DC wire gauge.
RLC Circuit Calculator
Calculate RLC circuit properties.
Electrical Conduit Fill Calculator
Calculate wire fill in conduit.
Zener Diode Calculator
Calculate zener diode resistor and current.
Inductor Energy Calculator
Calculate energy stored in an inductor.
Earthing Resistance Calculator
Calculate earthing system resistance.
Capacitor Energy Storage Calculator
Calculate energy stored in a capacitor.
Inductor Energy Storage Calculator
Calculate energy stored in an inductor.
Power Factor Correction Calculator
Calculate capacitor needed to improve power factor.
Voltage Regulator Calculator
Calculate linear voltage regulator components.
Motor Starting Current Calculator
Calculate electric motor starting current.
Solar Charge Controller Calculator
Calculate charge controller size for solar system.
RLC Resonant Frequency Calculator
Calculate resonant frequency of RLC circuit.
Series Impedance Calculator (RCL)
Calculate total impedance in series circuit.
About Electrical Tools
Our Electrical Tools calculators are designed to help you solve complex problems and get accurate results quickly.
Top Electrical Tools Calculators
حاسبة فاتورة الكهرباء
احسب تكلفة استهلاك الكهرباء الشهري والسنوي بناءً على القدرة والوقت
حاسبة قانون أوم
احسب الجهد والتيار والمقاومة باستخدام قانون أوم الكهربائي الأساسي V=IR
حاسبة القدرة الكهربائية
احسب القدرة الكهربائية بالواط باستخدام الجهد والتيار P=VI
حاسبة ألوان المقاومات
احسب قيمة المقاومة والتحمل من الألوان الموجودة على المقاومة
حاسبة مقاومة LED
احسب قيمة المقاومة المناسبة لحماية الديود الضوئي LED