jarvisbox

电费估算机

依瓦数、每日使用时数与电价估算每月电器电费。

Appliances

How to use

  1. Enter your electricity rate in cents per kWh (check your utility bill).
  2. Add appliances with their wattage and average daily usage hours.
  3. The total monthly kWh and cost update automatically as you add items.

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常见问题

Is this tool free?
Yes, completely free with no signup required.
Does my data leave my device?
No. All calculations happen in your browser — nothing is sent to a server.
Does it work on mobile?
Yes. The tool is mobile-first and works on any modern browser.

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