Electrical & Power

Electricity Cost Calculator

Estimate electricity use and operating cost for an appliance or device.

Device power (W)

Hours used per day

Electricity rate ($/kWh)

Results

—

Monthly energy—

Monthly cost—

How this calculator works

The calculator converts watts to kilowatts, multiplies by daily use, and projects a 30-day month.

Safety note: Electrical calculations are estimates. Follow local codes and manufacturer instructions, and use a qualified electrician for installation or safety-critical work.