Categories
109 Calculators

Electrical Tools

Calculations for electrical circuits, power, and voltage.

💵

Electricity Bill Calculator

Calculate monthly and annual electricity consumption cost based on power usage and rates (kWh)

Electrical Tools
Use Now

Ohms Law Calculator

Calculate voltage, current, and resistance using Ohm's Law (V=IR) for electrical circuits

Electrical Tools
Use Now

Electrical Power Calculator

Calculate electrical power in watts using voltage and current (P=VI, P=I²R, P=V²/R)

Electrical Tools
Use Now
🌈

Resistor Color Code Calculator

Calculate resistor value and tolerance from color bands (4-band, 5-band, 6-band)

Electrical Tools
Use Now
💡

LED Resistor Calculator

Calculate current limiting resistor value for LED circuits and arrays

Electrical Tools
Use Now
🔋

Battery Life Calculator

Calculate battery runtime and life based on capacity (mAh/Ah) and load current

Electrical Tools
Use Now
🔌

Voltage Divider Calculator

Calculate voltage division in resistor circuits and determine output voltage.

Electrical Tools
Use Now
🔗

Series & Parallel Resistors Calculator

Calculate total equivalent resistance for resistors in series or parallel configurations

Electrical Tools
Use Now
🔌

Wire Gauge Calculator

Calculate the appropriate wire gauge for electrical installations.

Electrical Tools
Use Now
📉

Voltage Drop Calculator

Calculate voltage drop in electrical cables and wires based on length, current, and resistance

Electrical Tools
Use Now

Three Phase Calculator

Calculate power, current, and voltage for 3-phase electrical systems (Star/Delta)

Electrical Tools
Use Now
⏱️

555 Timer Calculator

Calculate resistor and capacitor values for 555 timer circuits (astable/monostable modes)

Electrical Tools
Use Now
☀️

Solar Panel Calculator

Calculate required number and capacity of solar panels for photovoltaic system design

Electrical Tools
Use Now
🏢

Electrical Load Calculator

Calculate total electrical load, power demand, and sizing for residential/commercial buildings

Electrical Tools
Use Now
🔋

Capacitor Energy Calculator

Calculate energy stored in a capacitor.

Electrical Tools
Use Now

Three-Phase Power Calculator

Calculate active, apparent, and reactive power in three-phase systems.

Electrical Tools
Use Now
🔌

Cable Size Calculator

Calculate appropriate cable size based on current and distance.

Electrical Tools
Use Now
🔗

Series/Parallel Resistance Calculator

Calculate equivalent resistance for series or parallel circuit.

Electrical Tools
Use Now
🔋

Battery Capacity Calculator

Calculate battery capacity and runtime.

Electrical Tools
Use Now
☀️

Solar Panel Sizing Calculator

Calculate number of solar panels needed.

Electrical Tools
Use Now

Voltage Divider Calculator

Calculate voltage division in resistor circuits and determine output voltage.

Electrical Tools
Use Now
💡

LED Resistor Calculator

Calculate the required resistor value to safely operate an LED.

Electrical Tools
Use Now
🔋

Battery Life Calculator

Calculate battery life, total energy, and watt-hours from capacity and load.

Electrical Tools
Use Now
🔋

Capacitor Calculator

Calculate capacitance, charge, and stored energy in capacitors (Q=CV, E=½CV²)

Electrical Tools
Use Now
🔄

Transformer Calculator

Calculate transformer turns ratio, voltage, and current transformation (Vp/Vs = Np/Ns)

Electrical Tools
Use Now

AC Circuit Calculator

Calculate impedance, phase angle, and power in AC circuits (RLC analysis)

Electrical Tools
Use Now
Z

Impedance Calculator

Calculate total impedance from resistance and reactance in AC circuits (Z = √(R²+X²))

Electrical Tools
Use Now
cosφ

Power Factor Calculator

Calculate power factor and required capacitance for power factor correction (PF = cosφ)

Electrical Tools
Use Now
📐

Op-Amp Calculator

Calculate gain and resistor values for op-amp circuits (inverting/non-inverting)

Electrical Tools
Use Now
🔧

LM317 Voltage Regulator Calculator

Calculate resistor values for desired output voltage from LM317 adjustable regulator

Electrical Tools
Use Now

Frequency Calculator

Calculate frequency, period, and wavelength for electrical signals (f = 1/T)

Electrical Tools
Use Now
⚙️

Electric Motor Calculator

Calculate motor power, current, efficiency, and torque for AC/DC motors (HP to kW)

Electrical Tools
Use Now
🧲

Inductor Energy Calculator

Calculate energy stored in an inductor.

Electrical Tools
Use Now
🔄

RC Circuit Time Constant Calculator

Calculate time constant of an RC circuit.

Electrical Tools
Use Now

RL Circuit Time Constant Calculator

Calculate time constant of an RL circuit.

Electrical Tools
Use Now
⚙️

Electric Motor Power Calculator

Calculate power, torque, and efficiency of an electric motor.

Electrical Tools
Use Now
🔢

Capacitor Code Calculator

Convert 3-digit capacitor code to capacitance value.

Electrical Tools
Use Now

Extended Ohms Law Calculator

Calculate voltage, current, resistance, and power.

Electrical Tools
Use Now
🔋

Battery Runtime Calculator

Calculate battery runtime.

Electrical Tools
Use Now

Energy Consumption Calculator

Calculate energy consumption of devices.

Electrical Tools
Use Now

Three Phase Power Calculator

Calculate three-phase electrical power.

Electrical Tools
Use Now
📏

Cable Voltage Drop Calculator

Calculate voltage drop in cable.

Electrical Tools
Use Now
🔴

Breaker Sizing Calculator

Calculate appropriate breaker size.

Electrical Tools
Use Now
📏

Cable Size Calculator

Calculate proper cable size based on current and distance.

Electrical Tools
Use Now
📐

Parallel Resistance Calculator

Calculate equivalent resistance of parallel resistors.

Electrical Tools
Use Now
💡

Advanced LED Resistor

Calculate resistor for multiple LEDs in series/parallel.

Electrical Tools
Use Now
🔌

Generator Sizing Calculator

Calculate proper generator size for your needs.

Electrical Tools
Use Now
💡

LED Resistor Calculator

Calculate required resistor for LED.

Electrical Tools
Use Now
🔌

Transformer Calculator

Calculate transformer output voltage, turns ratio, and current ratio.

Electrical Tools
Use Now
🔋

Capacitor Energy Calculator

Calculate stored energy, charge, and electric field in a capacitor.

Electrical Tools
Use Now
🔌

Wire Gauge Calculator

Calculate the appropriate wire gauge for electrical installations.

Electrical Tools
Use Now
📐

Power Factor Calculator

Calculate power factor, reactive power, and phase angle from real and apparent power.

Electrical Tools
Use Now
🧲

Inductor Calculator

Calculate inductance value and stored energy in inductors (L, E=½LI²)

Electrical Tools
Use Now

Reactance Calculator

Calculate capacitive and inductive reactance for capacitors and inductors (Xc, Xl)

Electrical Tools
Use Now
〰️

Resonance Calculator

Calculate resonance frequency and Q-factor for LC resonant circuits (f = 1/2π√LC)

Electrical Tools
Use Now
🔊

Decibel Calculator

Calculate decibel levels, gain, and loss for power and voltage signals (dB, dBm, dBW)

Electrical Tools
Use Now
📟

PCB Trace Width Calculator

Calculate copper trace width for PCB boards based on current and temperature rise (IPC-2221)

Electrical Tools
Use Now
🔌

Extended Voltage Divider

Calculate voltage divider output.

Electrical Tools
Use Now
💡

Extended LED Resistor Calculator

Calculate LED resistor for multiple currents.

Electrical Tools
Use Now
🔌

Wire Ampacity Calculator

Calculate maximum wire ampacity.

Electrical Tools
Use Now
☀️

Solar Panel Sizing Calculator

Calculate solar panels needed.

Electrical Tools
Use Now
🔧

Resistor Network Calculator

Calculate equivalent resistance for series/parallel.

Electrical Tools
Use Now
🔌

Transformer Ratio Calculator

Calculate transformer turns ratio.

Electrical Tools
Use Now
☀️

Solar String Calculator

Calculate solar panel string size.

Electrical Tools
Use Now
💡

LED Strip Power Calculator

Calculate LED strip power supply needs.

Electrical Tools
Use Now
⚙️

Motor Current Calculator

Calculate electric motor current draw.

Electrical Tools
Use Now

Resistor Voltage Divider Calculator

Calculate output voltage of resistor divider.

Electrical Tools
Use Now
🔌

UPS Sizing Calculator

Calculate appropriate UPS size.

Electrical Tools
Use Now
📊

Power Factor Correction Calculator

Calculate capacitors for power factor correction.

Electrical Tools
Use Now
🔋

Battery Series/Parallel Calculator

Calculate voltage and capacity for battery connections.

Electrical Tools
Use Now
🔋

RC Circuit Calculator

Calculate RC circuit time constant.

Electrical Tools
Use Now

RL Circuit Calculator

Calculate RL circuit time constant.

Electrical Tools
Use Now
🔌

Transformer Turns Ratio

Calculate transformer turns ratio and voltage.

Electrical Tools
Use Now
⚙️

DC Motor Calculator

Calculate DC motor speed and torque.

Electrical Tools
Use Now

Capacitor Energy Calculator

Calculate energy stored in a capacitor.

Electrical Tools
Use Now
🔌

Wire Resistance Calculator

Calculate wire resistance based on material, length, and area.

Electrical Tools
Use Now

Three-Phase Power Calculator

Calculate power in a three-phase circuit.

Electrical Tools
Use Now
🔌

Transformer Ratio Calculator

Calculate transformer voltage ratio.

Electrical Tools
Use Now
🔌

Wire Ampacity Calculator

Calculate current carrying capacity of wire.

Electrical Tools
Use Now
🔀

Parallel Resistance Calculator

Calculate equivalent resistance in parallel.

Electrical Tools
Use Now
🔴

Circuit Breaker Size Calculator

Calculate appropriate circuit breaker size.

Electrical Tools
Use Now
🔋

Battery Capacity and Runtime Calculator

Calculate device runtime from battery.

Electrical Tools
Use Now
📏

Electrical Cable Sizing Calculator

Calculate appropriate cable size.

Electrical Tools
Use Now
📡

Antenna Calculator

Calculate antenna dimensions and length based on frequency (dipole, monopole, Yagi)

Electrical Tools
Use Now

Inrush Current Calculator

Calculate initial inrush current surge at startup for motors, transformers, and capacitors

Electrical Tools
Use Now
🔋

Extended Capacitor Energy

Calculate capacitor energy and charge.

Electrical Tools
Use Now
🌀

Inductor Reactance Calculator

Calculate inductor reactance at a frequency.

Electrical Tools
Use Now
🔌

Transformer Turns Ratio

Calculate transformer turns ratio.

Electrical Tools
Use Now

Power Factor Correction

Calculate capacitor needed for power factor correction.

Electrical Tools
Use Now
🔄

Series Impedance Calculator

Calculate series RLC circuit impedance.

Electrical Tools
Use Now
⚙️

Motor Efficiency Calculator

Calculate electric motor efficiency.

Electrical Tools
Use Now
🔌

Fuse Rating Calculator

Calculate appropriate fuse rating.

Electrical Tools
Use Now
🔌

Generator Load Calculator

Calculate required generator size.

Electrical Tools
Use Now

Capacitor Bank Calculator

Calculate capacitor bank for power factor correction.

Electrical Tools
Use Now
🌍

Earth Resistance Calculator

Calculate earthing system resistance.

Electrical Tools
Use Now
🔋

DC Wire Sizing Calculator

Calculate appropriate DC wire gauge.

Electrical Tools
Use Now
〰️

RLC Circuit Calculator

Calculate RLC circuit properties.

Electrical Tools
Use Now
🧮

Electrical Conduit Fill Calculator

Calculate wire fill in conduit.

Electrical Tools
Use Now

Zener Diode Calculator

Calculate zener diode resistor and current.

Electrical Tools
Use Now
🔄

Inductor Energy Calculator

Calculate energy stored in an inductor.

Electrical Tools
Use Now
🌍

Earthing Resistance Calculator

Calculate earthing system resistance.

Electrical Tools
Use Now
🔋

Capacitor Energy Storage Calculator

Calculate energy stored in a capacitor.

Electrical Tools
Use Now
⚙️

Inductor Energy Storage Calculator

Calculate energy stored in an inductor.

Electrical Tools
Use Now
📊

Power Factor Correction Calculator

Calculate capacitor needed to improve power factor.

Electrical Tools
Use Now
🔌

Voltage Regulator Calculator

Calculate linear voltage regulator components.

Electrical Tools
Use Now
⚙️

Motor Starting Current Calculator

Calculate electric motor starting current.

Electrical Tools
Use Now
☀️

Solar Charge Controller Calculator

Calculate charge controller size for solar system.

Electrical Tools
Use Now
📡

RLC Resonant Frequency Calculator

Calculate resonant frequency of RLC circuit.

Electrical Tools
Use Now
〰️

Series Impedance Calculator (RCL)

Calculate total impedance in series circuit.

Electrical Tools
Use Now