WattNoteEnergy costs · Home records
Appliance electricity cost calculator
Turn a label and a bill into a cost estimate. Keep your appliances and monthly records together.
No sign-up · Records stay in this browser
Your appliance’s estimated energy cost
Monthly estimate · annual average
Yearly estimate
Daily average
What this estimate uses
Calculation method and limits
Watts ÷ 1000 × hours × days gives energy. Multiply per-cycle energy by cycles; annual energy is used directly. Monthly and daily averages divide the annual estimate by 12 and 365. Seasonal bills, changing fixed charges, tiers and time-of-use rates are not predicted. Maximum label watts may differ from average power.
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