📊 CSV Cleaner

Clean and format CSV data. Trim cells, remove empty rows, auto-detect delimiters. Free, private — all in your browser.

Paste CSV data

Delimiter:

Cleaned CSV

About CSV Cleaner

Clean and normalize CSV data. Trim whitespace, remove empty rows, normalize headers, fix encoding issues. All processing happens in your browser — your data never leaves your device.

Auto-Clean

Trim spaces, remove empty rows and columns, normalize headers to lowercase with underscores. One click cleanup.

Encoding Fix

Fix common CSV encoding issues including BOM characters and non-printable characters.

Preview Changes

See row counts before and after cleaning. Preview output before downloading the cleaned file.

Private & Secure

CSV data processed locally in your browser. No uploads, no servers. Works with files of any size.