Clean Excel & CSV files before importing — free online data cleaner

Automatically detect duplicates, format errors, ambiguous dates, broken encoding and invalid types. A fast Excel data cleaning and CSV cleaner that runs 100% in your browser.

Upload your CSV or Excel file

Drag and drop your file below to automatically detect errors and get a clean sheet.

or click to browse your files

100 % Local engine

.csv · .xlsx · .xls