01 / ESTIMATE

Estimate kWh for one type of appliance

Enter electrical input power and your usage schedule. For variable-power devices, treat this as an illustration, then check an energy label or measure actual kWh.

Estimated result—

Enter your values and select Calculate. Your numbers remain in this browser.

Method & sources

Formula: W × hours/day × days × units ÷ 1,000 = kWh.

This estimate assumes steady power throughout the entered hours. It excludes standby modes, compressor cycling, taxes, and fixed charges.

Method & sources ↗

Continue learning

Build an estimate you can check: watts, hours per day, days of use, then kWh.

Turn operating hours into monthly kWh ↗