Drop an Excel or CSV file exported from QuickBooks, Sage, or any other software. CleanSheet fixes broken accents, removes duplicates, standardizes dates and numbers. Everything happens in your browser.
Last updated: March 5, 2026
Exports from QuickBooks, Sage, and other software turn French accents into garbled characters. 'Reference' becomes 'Référence'. You fix them manually, cell by cell.
Duplicate rows that skew your totals. Empty rows that break your formulas. Blank columns that clutter your spreadsheet.
01/15/2026, 15-01-2026, Jan 15 2026 in the same file. Amounts with commas, periods, spaces. Excel doesn't know what to do with them.
Drop your file. Click Clean. In 30 seconds, accents are fixed, duplicates removed, dates and numbers standardized. You download a clean file.
Automatically detects and fixes French accents broken by CSV and Excel exports.
Identifies and removes duplicate rows so your totals are correct.
Converts all date formats into a single consistent format throughout the file.
Standardizes thousand and decimal separators so your numbers are calculable.
Drop an Excel file, CleanSheet analyzes every column and applies corrections automatically.
CSV files exported with the wrong encoding are detected and fixed automatically. UTF-8 and Latin-1 supported.
Your file never leaves your computer. All processing happens in your browser.
After loading, you can disconnect from the Internet and keep cleaning files.
No sign-up, no password. You open the page and start.
Drop your Excel or CSV file and get a clean file in 30 seconds.