經常性費用分析器

How to use

1. Enter the cost amount (e.g., $9.99).
2. Select how often this expense recurs — daily through yearly.
3. All equivalent time frames appear instantly in the results table.

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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.