Remove Duplicate Rows from a CSV
Upload a CSV and instantly remove duplicate rows. Choose which columns define a duplicate, or match across every column. Your file never leaves your browser.
Using sample data
5 rows, 3 columns · Processed in your browser, never uploaded
Input preview
| name | signup_date | |
|---|---|---|
| John Smith | john@email.com | 2024-01-15 |
| Jane Doe | jane@work.co | 2024-01-16 |
| John Smith | john@email.com | 2024-01-17 |
| Bob Wilson | bob@company.io | 2024-01-18 |
| Jane Doe | jane@work.co | 2024-02-02 |
Want more than a quick fix?
Need to remove near-duplicates or fuzzy matches (e.g. "John Smith" vs "J. Smith")? The AI app can dedupe by meaning, not just exact text.
How to remove duplicates in a CSV
- 1Upload your CSV file (or use the sample loaded above).
- 2Choose your options — columns and settings.
- 3Click "Remove duplicates" to process instantly in your browser.
- 4Download the clean CSV. Nothing is ever uploaded to a server.
Doing something more complex?
Read the guide: How to remove duplicate rows from a CSV file.
View guide →Need smarter csv transform?
Need to remove near-duplicates or fuzzy matches (e.g. "John Smith" vs "J. Smith")? The AI app can dedupe by meaning, not just exact text.
Try AI transform free →FAQ
- Is the remove duplicates tool free?
- Yes. This tool is completely free, requires no account, and runs entirely in your browser. Your CSV file is never uploaded to a server.
- When should I use Magic CSV AI instead?
- Need to remove near-duplicates or fuzzy matches (e.g. "John Smith" vs "J. Smith")? The AI app can dedupe by meaning, not just exact text.
- What file formats are supported?
- Upload any comma-separated CSV file. You can download the result as a clean CSV ready for Excel, Google Sheets, or database import.
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Split ColumnUpload a CSV and split a single column into multiple columns using any delimiter. Your file is processed in your browser and never uploaded.