How do I compare two Excel files online?

Upload your two Excel files or spreadsheets into the tool, select specific worksheets if necessary, configure header settings, and view side-by-side differences highlighted instantly.

What file formats are supported?

Supports Microsoft Excel (.xlsx, .xls, .xlsm, .xlsb), OpenDocument Spreadsheets (.ods, .fods), CSV, TSV, TXT, PRN, and HTML tables.

Can I export the comparison diff report?

Yes, you can export comparison results into XLSX, CSV, ODS, or HTML formats, or copy the formatted text diff report.

Free Online Excel Comparison Tool - Compare Two Excel Files Side by Side

Compare Excel spreadsheets online and find differences instantly. Features include side-by-side comparison, table view, text view, header support, and export options. Supports XLSX, XLS, CSV, ODS formats.

File 1 (Original)

Drag & Drop Excel/CSV file here or Choose File 1

File 2 (Modified)

Drag & Drop Excel/CSV file here or Choose File 2

Total Rows:0

+++ Added Rows:0

--- Removed Rows:0

--> Modified Cells:0

100% Match

Original Workbook0 Rows

#	Data
No file loaded. Upload or paste Excel/CSV data above.

Modified Workbook0 Rows

#	Data
No file loaded. Upload or paste Excel/CSV data above.

Upload two spreadsheets above to generate textual diff view...

How to Compare Two Excel Files Online

1. Upload Your Spreadsheets

Drop files into the grid areas
Use file chooser buttons
Import or drag & drop files
Copy/paste data directly
Use sample data to test instantly

2. Configure Comparison Settings

Choose specific sheets from multi-tab workbooks
Toggle "Use First Row as Headers"
Swap files if needed
Clear or reset data anytime

3. View & Export Differences

Table View: Side-by-side comparison with changes highlighted
Text View: See changes in structured diff text format
Export results in XLSX, CSV, ODS, or HTML formats

Key Features

📊

Interactive Spreadsheet Grid Interface

Dual scroll-synced grid views with cell-level change highlighting.

📑

Multiple Sheet Selection

Select specific worksheets from multi-tab Excel workbooks.

🔄

Header Row Auto-Detection

Toggle header row recognition for accurate column label comparisons.

💾

Export to Multiple Formats

Download comparison reports in XLSX, CSV, ODS, or HTML table formats.

🔗

Share & Copy Comparisons

Copy diff summary output to clipboard for reports or emails.

🔍

Change Highlighting

Color-coded indicators for added rows, deleted rows, and cell changes.

📱

Works on All Devices

100% browser-based comparison on desktop, tablet, or mobile.

Supported File Formats

Excel Files: XLSX, XLS, XLSM, XLSB
OpenDocument Spreadsheets: ODS, FODS
CSV and Text Files: CSV, TXT, PRN, TSV
Other Supported Formats: HTML Tables, DIF Files, SYLK Files, RTF Tables

Understanding Diff Indicators

Indicator	Meaning
+++	New row added in modified workbook
---	Row removed from original workbook
-->	Cell value changed between files
:	Row moved or reordered
@@	Header row marker
...	Unchanged content omitted for readability

Tips for Best Results

Organize Data

Sort data rows if possible, use similar column layouts in both workbooks, and clean up empty rows or columns before comparing.

Header Handling

Enable "Use First Row as Headers" when your spreadsheet includes column titles. Disable it when performing raw data matrix comparisons.

Large Files & Export

Use sheet selection to compare specific tabs in large workbooks, switch to Text View for performance, and export diff results for offline audit records.