Compare Excel Files
Diff two workbooks cell by cell and see exactly what changed.
Upload two versions of a file and get a colour-coded diff: added rows, deleted rows, and every cell whose value moved. Match rows by a key column rather than position, so a single inserted row does not report the whole file as changed.
- Rating
- 4.9(2.3K)
- Monthly uses
- 311K
- Price
- Free
or drag it here
.xlsx, .xls, .csv · processed locally, never uploaded
Files stay on your device
What it does well
- Key-based row matching that survives insertions and reordering
- Per-cell change list with old and new values side by side
- Diff report exported as XLSX with colour-coded change types
How to use Compare Excel Files
- 1
Upload the original file and the revised file.
- 2
Pick the key column that identifies a row, or match by position.
- 3
Review the diff summary and drill into changed cells.
- 4
Export the diff report or a highlighted workbook.
Watch a walkthrough
Common problems and fixes
Every row shows as changed.
Positional matching is being used on a file with an inserted row. Choose a key column instead.
Numbers differ by tiny amounts.
Floating point noise. Set a numeric tolerance — 1e-9 is usually enough to suppress it without hiding real changes.
Frequently asked questions
What people say
Fast, no signup wall, no watermark. I have sent the Compare Excel Files link to half my department.
Small thing, but the error messages actually tell you what to fix. Compare Excel Files flagged a hidden character that had been breaking my lookups for weeks.
Our IT team blocked every other online tool because they upload files. This one does not, so compare excel files finally got approved for use on real data.
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