Free browser tool
CSV Cleaner
Paste or upload a messy CSV and clean it in one click — remove duplicate rows, drop blank rows, trim stray spaces, and tidy headers. Then copy or download the result.
🔒 100% private: the file is processed entirely in your browser and never uploaded anywhere.
Why clean a CSV before importing it?
Stray spaces, duplicate rows, and blank lines are the top reasons a CSV imports badly into Google Sheets or Excel — they break VLOOKUP/XLOOKUP matches, inflate pivot tables, and throw off totals. Cleaning the file first saves the find-the-bug-later headache.
Need a place to put the clean data? Grab the freeMonthly Budget Planneror browse all personal-finance templates. More tools live under Free Tools.