Loan Repayment Calculator

Estimate fixed-rate monthly amortizing payments, total interest and balances; export the schedule to CSV.

Processed on your device · No file uploads

Your selected files and results are processed on this device. They are not sent to external servers or stored on our servers.

WorkspaceLOCAL PROCESSING

Loading the tool. JavaScript is required.

Example input & result

1,200,000 KRW · 0% · 12 months

100,000 KRW monthly · zero interest

Up to 600 months. Actual lender day counts, rounding, prepayments and fees may differ.

Instructions

Support & FAQ

Are inputs stored on a server?

No. Inputs and results are processed on-device without uploading or storing them with the operator.

What does this tool do?

Estimate fixed-rate monthly amortizing payments, total interest and balances; export the schedule to CSV.

What is an example result?

1,200,000 KRW · 0% · 12 months → 100,000 KRW monthly · zero interest

What are the limits and assumptions?

Up to 600 months. Actual lender day counts, rounding, prepayments and fees may differ.