Electrical Calculators

Calculate voltage, current, cable size, voltage drop, electrical load, power factor, and other essential electrical values.

Energy Cost Calculator

Energy Cost Calculator with an electricity meter, connected loads, usage graph, and cost indicators

An Energy Cost Calculator estimates how much electrical energy an appliance, motor, machine, or group of loads consumes and what that energy may cost. Electricians, engineers, maintenance technicians, facility managers, business owners, and homeowners can use it to calculate daily, monthly, or annual electricity consumption from power, operating time, quantity, …

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Power Factor Calculator

Power Factor Calculator with an induction motor, power meter, capacitor bank, and power triangle

A Power Factor Calculator determines power factor, real power, apparent power, reactive power, phase angle, line current, or the reactive compensation required to improve an AC electrical system. Electricians, engineers, panel builders, maintenance technicians, automation professionals, and students can use it for single-phase and three-phase calculations. Power factor affects the …

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Battery Backup Calculator

Battery Backup Calculator with a battery bank, inverter, power meter, and connected load

A Battery Backup Calculator helps electricians, engineers, solar installers, UPS technicians, automation professionals, and students estimate how long a battery can operate a connected load. It can also calculate the battery capacity required to achieve a specified backup duration. Battery runtime depends on more than voltage and amp-hour capacity. Load …

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Cable Size Calculator

Cable Size Calculator concept with copper cables, conductor cross-sections, and measuring instruments

A Cable Size Calculator helps electricians, electrical engineers, maintenance technicians, panel builders, automation professionals, and students estimate a suitable conductor cross-sectional area for an electrical circuit. It considers load current, system voltage, phase type, cable length, allowable voltage drop, conductor material, and applicable installation conditions. Correct cable selection is important …

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Voltage Drop Calculator

Voltage Drop Calculator showing source voltage, cable run, multimeters, and electrical load

A Voltage Drop Calculator is an essential tool for electricians, electrical engineers, PLC technicians, and industrial automation professionals. It helps determine how much voltage is lost as electrical current travels through a conductor. Excessive voltage drop can reduce equipment performance, cause motor-starting problems, create PLC power-supply issues, and increase energy …

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Ohm’s Law Calculator

Ohm's Law Calculator with digital multimeter, resistor, test probes, and electrical circuit

An Ohm’s law calculator is one of the most useful tools for students, electricians, technicians, and engineers who work with electrical circuits. Instead of manually solving equations, this calculator allows you to quickly determine voltage, current, or resistance by entering known values. Whether you are learning basic electronics, troubleshooting electrical …

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