Repair Excel File

Recover a corrupted Excel spreadsheet — we rebuild its structure and hand back a clean, working .xlsx. Free, online, no watermark.

Free forever
No watermark
No signup
Batch ready

Upload the broken or unreadable Excel file.
We re-parse it and rebuild its internal structure.
Download the recovered .xlsx workbook.

All xls.repair tools

Repair Excel Repair XLS Recover a corrupted Excel spreadsheet — we rebuild its structure and hand back a clean, working .xlsx. Free, online, no watermark. Excel to CSV XLSX → CSV Extract each worksheet to a plain CSV — a robust way to rescue data from a shaky workbook. CSV to Excel CSV → XLSX Build a clean .xlsx workbook from a CSV file.

xls.repair brings broken spreadsheets back to life. The main tool re-parses a corrupted Excel file and rebuilds its structure to recover your data; supporting tools extract worksheets to CSV and rebuild clean workbooks from CSV. Free, no account, no watermark.

Our guides explain why Excel files get corrupted, what repair can and can't recover, and how to rescue your data when a workbook won't open.

Recover first, then rebuild

Start with Repair Excel to get the workbook opening again. If it's too far gone, rescue the raw data with Excel to CSV and rebuild a clean file using CSV to Excel.

From our guides

Browse all articles →

Why Excel files corrupt Excel File Corrupted on a USB or Network Drive: What to Do Editing Excel directly on a USB stick or network share is a common cause of corruption. Learn why it happens, how to recover the file, and the safer workflow. 5 min read Excel error messages Fix "Excel Cannot Open the File Because the Format Is Not Valid" The "file format or extension is not valid" error stops Excel opening your workbook. Learn what it means, how a rebuild fixes it, and when the extension is just wrong. 6 min read Excel error messages Fix "We Found a Problem With Some Content" in Excel Excel warns it found a problem with some content and offers to recover it. Learn what the message means, how to answer the prompt, and how a rebuild clears it. 5 min read Repair Excel how-to How to Repair a Corrupted Excel File: A Practical Guide A practical, honest guide to repairing a corrupted Excel file. Learn what an xlsx actually is, how a rebuild recovers your cells, and when a backup beats a repair. 6 min read Preventing spreadsheet loss How to Prevent Excel File Corruption: A Simple Checklist Most Excel corruption is preventable with a few habits. Learn how to keep workbooks healthy, from finishing saves to backups, so a corrupted file is never your only copy. 6 min read Recovering spreadsheet data How to Recover an Excel File After a Failed Download An interrupted download often leaves an Excel file that won't open. Learn how to tell a truncated file from a fixable one, and the fastest route to a working workbook. 5 min read Recovering spreadsheet data Recover Excel Data With a CSV Export When Repair Falls Short When a workbook is too damaged for a full rebuild, extracting to CSV rescues the raw values. Learn how a CSV export recovers your data and rebuilds a clean file. 6 min read Recovering spreadsheet data How to Recover an XLSX File That Won't Open An xlsx that refuses to open is usually recoverable. Learn how to diagnose the cause, rebuild the workbook, and rescue the raw values when the file is badly damaged. 6 min read

Frequently asked questions

Is xls.repair free?

Yes — every tool is free, with no watermark and no account.

What corruption can it fix?

Broken ZIP packages, malformed XML and interrupted downloads recover well. Truncated files may be unrecoverable — the tool tells you honestly.

Are my files private?

Files are processed in an isolated workspace and removed shortly after download.