by BrainyDreamer
Clean messy CSV files in seconds. No code required. Process thousands of files with one click.
✨ Free forever • No credit card required
Spending entire days cleaning CSV files one by one, copying formulas, fixing dates...
Large files freeze your computer. You lose your work. Start over again and again.
Same cleaning steps every week. Remove duplicates, trim spaces, normalize dates...
Manual cleaning leads to errors. Each file is slightly different. Quality suffers.
Drag & drop or select your CSV files. Process one file or thousands at once.
Select columns, remove duplicates, normalize dates, trim whitespace, and more.
Get perfectly cleaned files in seconds. Save hours of manual work.
Process millions of rows in seconds. Optimized for large files that crash Excel.
Upload hundreds of CSV files at once. Process them all with one click.
Different settings for each file. Complete control over your data cleaning.
Automatically detects and normalizes dates. Supports 20+ formats including "May 5 2021" and "1993.07.25".
Case-insensitive duplicate detection. Choose which columns to compare.
Keep only the columns you need. Rename headers, change case, normalize names.
Filter rows based on any condition. Contains, equals, greater than, and more.
Auto-detects file encoding. Works with UTF-8, Latin-1, Windows-1252, and more.
Choose your delimiter, encoding, and line endings. Perfect for any system.
Clean client data before analysis. Process survey results. Prepare datasets for visualization.
Process experimental data. Clean survey responses. Prepare datasets for statistical analysis.
Clean sales data. Process customer lists. Prepare reports for stakeholders.
Clean product catalogs. Process order exports. Update inventory files.
Clean email lists. Process campaign data. Prepare audience segments.
Prepare data for import. Clean API exports. Process database dumps.
Start free. Upgrade when you need more power.
Cancel anytime. No questions asked.
Yes! Your files are processed in real-time and never stored on our servers. Once you close the browser, your data is gone. We take privacy seriously.
We support CSV files with any delimiter (comma, semicolon, tab, pipe) and any encoding (UTF-8, Latin-1, Windows-1252, etc.). We auto-detect the format.
Free plan supports files up to 1 MB. Premium supports files up to 100 MB and beyond. We're optimized for large datasets that crash Excel.
Yes! Premium users can upload and process hundreds of files simultaneously with batch processing. Apply different settings to each file with per-file overrides.
No! OkCSV runs entirely in your browser. No downloads, no installations, no software updates. Works on Windows, Mac, and Linux.
Absolutely! Cancel anytime from your account dashboard. No questions asked. You'll keep access until the end of your billing period.
Remove duplicates, trim whitespace, normalize dates (20+ formats), filter rows, select columns, rename headers, normalize column names, fill missing values, type conversion, and more.
Yes! If you're not satisfied within the first 7 days, we'll refund you completely. No questions asked.
Join hundreds of professionals who've already saved countless hours with OkCSV.
✨ No credit card required for free plan