Electrical Calculators & Tools

Free electrical tools from URTools. No sign-up required.

kW to HP Calculator

Convert kilowatts to horsepower and back.

Estimate motor current from power, voltage and efficiency.

Calculate voltage, current, resistance and power.

Estimate voltage drop from current, length and cable resistance.

Convert electrical power to current for common configurations.

Browse practical, mobile-friendly tools for common electrical tasks. Results are generated instantly in your browser wherever possible.