電費估算機
依瓦數、每日使用時數與電價估算每月電器電費。
Appliances
Monthly estimate
kWh / month
Cost / month
Cost / year
How to use
- Enter your electricity rate in cents per kWh (check your utility bill).
- Add appliances with their wattage and average daily usage hours.
- The total monthly kWh and cost update automatically as you add items.
Related tools
常見問題
- 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.
Last updated: By jarvisbox