Online Spreadsheet Deduplicator to Remove Duplicate Rows
Clean your data with our free spreadsheet deduplicator. Remove duplicate rows from CSV and Excel files instantly in your browser. Try it now.
About Spreadsheet Deduplicator
The Spreadsheet Deduplicator removes repeated rows and cleans messy datasets from CSV or Excel files. Whether you are managing customer lists, analyzing survey data, or preparing inventory sheets, duplicate entries can distort your reporting and lead to costly administrative errors.
This browser-based tool processes your files directly on your local device without sending your data to external servers. It is free to use with no account required, providing a fast and private way to deduplicate spreadsheets in seconds.
Key features
- Client-side processing keeps your spreadsheet data private and secure
- Supports CSV, TSV, and Excel spreadsheet formats
- Identifies duplicates across all columns or specific selected fields
- Case-sensitive and case-insensitive matching options
- Instantly preview and export cleaned data without quality loss
- No file uploads or software installation required
How to use Spreadsheet Deduplicator
- Upload or drag and drop your spreadsheet file into the tool.
- Select whether to match across all columns or specific fields.
- Configure matching preferences such as case sensitivity and trimming whitespace.
- Click to identify and remove all duplicate rows.
- Download the cleaned spreadsheet file to your device.
Who is it for?
- Marketers merging contact lists from multiple campaign sources.
- Data analysts preparing raw survey responses for statistical modeling.
- E-commerce managers reconciling inventory feeds and product catalogs.
- Sales teams eliminating duplicate lead entries before CRM imports.
- Accountants verifying transaction logs and billing statements.
Frequently asked questions
Is this spreadsheet deduplicator free to use?
Yes, the tool is completely free for basic deduplication without requiring any account registration or subscription.
Is my spreadsheet data uploaded to a server?
No, all data processing occurs locally within your web browser. Your confidential information never leaves your device.
Which file formats are supported?
The tool supports standard tabular data formats, including CSV, TSV, and Excel files (.xlsx and .xls).
Can I choose which columns to check for duplicates?
Yes, you can evaluate duplicate entries across the entire row or restrict the check to specific columns, such as email addresses or IDs.
Does the tool modify or overwrite my original file?
No, the tool generates a new, cleaned copy of your data for download, leaving your original spreadsheet untouched.