Is this tool free to use?

Yes, completely free. No sign-up, no payment, no usage limits — ever.

100% safe. All processing happens locally in your browser. Files are never sent to any server.

Do I need to create an account?

No account needed. Open the tool and start using it immediately — no registration required.

No installation required. It runs directly in your web browser on any modern device.

Once the page is loaded, most tools can continue to function without an internet connection since processing is local.

Calculate monthly payment and total interest

Loan amount

Annual rate (%)

Loan term (years)

¥2,415.99

Monthly payment

¥869,757.07

Total payment

¥369,757.07

Total interest

All processing is done locally in your browser. Files are never uploaded to any server

Upload your file

Click the upload area or drag and drop your file into the tool

Adjust settings

Configure options and parameters as needed

Download the result

Click the download button to save your processed file

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Always Free

No sign-up, no cost, forever

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Privacy First

Files never leave your browser

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100% Local

All processing happens on your device