Electricity Cost Calculator

Calculate kWh and approximate daily, monthly, and yearly operating cost for an electrical load.

Power (watts)

Hours per day

Electricity rate ($/kWh)

Days used

—kWh for selected days

—Selected-period cost

—30-day cost

—365-day cost

How to use this Electricity Cost Calculator

Estimate electricity usage and cost from watts, hours per day, electricity rate, and days. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.