Open CSV Files Online
A CSV file is a table stored as text: one row per line, with values separated by commas or semicolons. Almost every spreadsheet and database can export it.
Comma-Separated Values · .csv
What you see in the CSV viewer
- A fast table that scrolls through hundreds of thousands of rows
- Automatic delimiter and encoding detection
- Sorting, filtering and statistics per column
- Export the filtered rows as CSV, JSON or Excel
Other ways to open CSV files
Windows
Excel opens CSV, but may misread dates, leading zeros and delimiters.
macOS
Numbers or Excel open it; Quick Look shows a preview.
Phone & tablet
Spreadsheet apps work, but large files are slow; this viewer only draws the visible rows.
Frequently asked questions
Is my CSV file uploaded?
No. The file is read by your browser and shown on your own device. Nothing is sent to a server, and it is gone when you close the tab.
How do I open a CSV file without installing software?
Drop the .csv file on this page. It opens straight away in the CSV & Excel Viewer, on Windows, macOS, Linux, Android and iPhone alike.
What if my CSV file doesn't open?
The viewer checks the file's content, not just its name. If it is damaged or not really a CSV file, you'll see an error or can switch to the hex view to look at the raw bytes.
Can I convert CSV to another format?
Yes. The free file converter turns CSV files into other formats in your browser as well, without uploading them.