Detect CSV Delimiters
Detect the delimiter before a CSV import breaks your data.
Why delimiter detection matters
CSV files often use commas, tabs, semicolons, or pipes depending on the source system and locale. Detecting the delimiter first keeps imports from collapsing into one column.
Benefits: Auto-detect comma, semicolon, tab, or pipe delimiters, preview parsed rows instantly, local browser processing, and no upload step.
Best for: Troubleshooting imports, checking TSV vs CSV files, working with international exports, and database import prep.
Read this before you convert
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Next step
Need a different route? Check the next tool in this cluster instead of starting over.
Browse Developer toolsQuestions before you use it
Why does my CSV have all data in one column when imported?
This almost always means the delimiter is wrong. For example, Excel may expect a comma but your file uses semicolons (common in European exports). This tool will tell you exactly which delimiter is used.
What delimiters can you detect?
Comma (,), semicolon (;), tab, pipe (|), and colon (:) are all detected automatically.
Does it support large CSV files?
Yes. The tool analyzes the first few rows to detect the delimiter, so even very large files are processed quickly.