Electrical Calculators & Tools

Explore practical electrical tools from URTools. Each tool includes an explanation of the method and common limitations.

⚡

kW to HP Calculator

Convert kilowatts to horsepower and back.

Motor Current Calculator

Estimate motor current from power, voltage and efficiency.

Ohm's Law Calculator

Calculate voltage, current, resistance and power.

Voltage Drop Calculator

Estimate voltage drop from current, length and cable resistance.

Watts to Amps Calculator

Convert electrical power to current for common configurations.

About Electrical tools

These tools are designed for common electrical tasks. Open an individual tool to see how the calculation works, a worked example, assumptions, FAQs and related tools.