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Loan repayment calculator.

Load ledger sheets locally, check interest calculations, and export a traceable Excel file.

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Choose ledger XLSX Expects columns such as Nr, Beleg, Datum, Text, Soll, Zins, Haben, and Stand.

Parameters

Payment order

Kosten (verzinslich, unverzinslich), Kapital, Zinsen

Fixed order: interest-bearing costs, non-interest-bearing costs, principal, interest remains until the end.

Surcharge in percentage points Calculate until

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Inspect and scrub DOCX, XLSX, and PPTX files locally for metadata, macros, external links, and embedded content.

Fill DOCX and XLSX templates locally from Excel data and export a ZIP.

Convert Office documents to PDF locally with LibreOffice WASM.