Free CSV Column Cleaner

Messy CSV files are a fact of life when working with data. Exported data often comes with extra columns you do not need, inconsistent formatting, trailing whitespace, duplicate rows, and other issues that make the data hard to work with. Our free CSV column cleaner tackles all of these problems in one tool. Upload your CSV file and select which columns to keep or remove. The cleaner can also trim whitespace from all cells, remove duplicate rows, fix inconsistent date formats, and clean up common data quality issues. The result is a clean, properly formatted CSV file ready for analysis, import, or further processing. Data analysts, marketers, researchers, and anyone who works with spreadsheet data regularly knows that data cleaning takes up a huge portion of the actual work. Our tool automates the tedious parts so you can focus on analysis and insights instead of data janitoring. The cleaner handles files with thousands of rows efficiently, running entirely in your browser for speed and privacy.