Compare two Excel files online
Find added, removed, and changed rows in two XLSX or XLS worksheets. Choose A as the old version and B as the new one, then download an Excel diff report. Files stay in your browser.
Drag an XLSX or XLS file here, or choose one below. Up to 10 MiB per file.
Drag an XLSX or XLS file here, or choose one below. Up to 10 MiB per file.
Set up your task
Your files are processed in this browser. Supported files: XLSX or XLS, up to 10 MiB each.
Know what changed
A structured report makes version changes easier to inspect.
Align rows without an ID
Unchanged rows and shared fields identify corresponding records. You can also choose a stable key.
See every category
Count added, removed, changed, unchanged, and unmatched rows separately.
Inspect cell changes
The report includes source row numbers, column mappings, old values, and new values.
How to compare Excel files
Three steps, all in your browser.
Choose A and B
Upload the older and newer workbook, then select one worksheet from each.
Review the match mode
Similar rows align automatically by default. You can also choose key columns or position and review the mapped fields.
Download the report
Review category counts and save a detailed XLSX comparison report.
Conversioni correlate
Passi a una conversione inversa o correlata dei file di contatti.
Excel comparison FAQ
How are rows matched?
Unchanged rows and shared fields align rows automatically without an ID. Use key columns when a stable ID is available.
What if a key is duplicated?
Key mode stops and shows sample row numbers. Add a key column or remove duplicates; automatic alignment does not need a unique key.
What happens to empty keys?
Key mode lists rows with all-empty keys as unmatched. Automatic alignment uses row content instead.
Does row position detect moves?
No. Inserting a row can make later rows appear changed. Automatic alignment can use unchanged surrounding rows.
Are formulas calculated?
No. Saved results are used, and formula expressions can also be compared. Missing saved results block the report.
Are files uploaded?
No. The comparison runs in your browser and produces a new XLSX report.
Is this Excel comparison tool free?
Yes. Compare XLSX or XLS files and download an XLSX report without an account or installation. The comparison runs locally in your browser.
Can I compare sheets with different column names or orders?
Yes. Review and adjust the column mappings before comparison and choose which mapped fields to include. In key mode, map the corresponding ID columns on both sides.
Can I compare every worksheet or detect formatting changes?
Each run compares one selected worksheet from each file. The tool compares cell values, types, and optionally formula expressions; it does not compare fonts, colors, charts, macros, or workbook layout.
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