Keys
Rows matched by ID
An ID-like column (id, sku, email, order_id…) is found automatically, so sorting differences never count as changes.
Excel & CSV Diff Checker · Free
Compare spreadsheets, cell by cell.
Drop two Excel, OpenDocument, Numbers or CSV files. See added, removed and changed rows — matched by ID even when the order is different.
Supports Excel (.xlsx, .xlsm, .xlsb, .xls), OpenDocument (.ods), Apple Numbers, CSV and TSV. Files are read in your browser — nothing is uploaded.
Results appear here.
Drop two spreadsheets, or paste CSV or cells
Rows are matched by an ID column even when they're reordered, and every changed cell is highlighted.
How It Works
Three steps. No sign-up.
- 1
Drop two Excel (.xlsx, .xls), OpenDocument (.ods), Numbers or CSV files — or paste cells from Google Sheets. Pick the sheet if there are several.
- 2
Press Compare Sheets. Rows are matched by an ID column when one exists, so reordered rows still line up.
- 3
See added, removed and changed rows with every changed cell highlighted, then download the differences as Excel or CSV.
Features
Built for real-world data.
Cells
Cell-level highlights
Each changed cell shows the old value struck through above the new one — no hunting across wide rows.
Columns
Columns by name
Columns are matched by header, so reordered, added and removed columns are handled and clearly labelled.
Formats
Every spreadsheet format
XLSX, XLSM, XLSB, XLS, ODS, Numbers, CSV and TSV — with sheet picking, quoted fields and multi-line cells handled.
Numbers
Numbers by value
“1,000” equals “1000” and “49.00” equals “49”, so formatting differences don’t create noise. Optional.
Private
Your data stays local
Customer lists, orders and finance exports are compared in your browser and never uploaded.
FAQ
Questions & answers
Can I compare two Excel files?
Yes. Drop .xlsx, .xlsm, .xlsb or older .xls files straight in — as well as OpenDocument .ods and Apple Numbers files. If a workbook has several sheets, choose which one to compare on each side. You can also paste cells copied from Excel or Google Sheets.
How are rows matched?
If a column has unique values in both files and looks like an identifier (id, sku, email, order_id…), rows are matched by it. Otherwise rows are aligned by content and order. You can pick the key column yourself.
What if the columns are in a different order?
Columns are matched by their header names, so order doesn’t matter. New columns are marked with + and removed columns with −.
Does it handle quotes, commas and line breaks inside cells?
Yes. The parser follows RFC 4180, so quoted fields with commas, escaped quotes and multi-line text are handled.
Can I export the differences?
Yes. Download an Excel (.xlsx) or CSV file listing every added, removed and changed row, with changed cells shown as “old → new”.
Are formulas compared?
Cell values are compared — the results formulas produce, as saved in the file. Dates are normalized to YYYY-MM-DD and numbers are compared by value.
Is there a size limit?
Files up to 25 MB can be loaded. Everything runs in your browser, so very large files depend on your device’s memory.
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