Free Online CSV Tools
View and edit CSV tables, clean and validate rows, or convert files to JSON, Excel, PDF, and SQL. Choose a tool and work with your data in your browser.
Quick access to common CSV tasks.
CSV Table Viewer
Open and view CSV files with search, sort and filter.
→CSV Editor
Edit your CSV data easily and download.
→CSV Cleaner
Remove duplicates, fix errors and clean your data.
→CSV Validator
Check for errors and validate your CSV structure.
→CSV → JSON
Convert CSV to JSON format.
→CSV → Excel
Convert CSV data to Excel-ready format.
→Paste or open CSV and start working instantly.
Your data is processed locally in your browser. Paste up to 2 MB or open a CSV/TSV file up to 25 MB.
Your result will appear here.
CSV data as rows and columns
Preview up to 100 rows. Scroll horizontally to see additional columns.
Process your files in seconds, not minutes.
Supported tools read and process file content in your browser.
Just upload and get started.
Use the core CSV tools at no cost.
Drag & drop your CSV file or click to browse.
Our tool works on your file instantly.
Get your result file, ready to use.
Common questions.
What is a CSV file?
A CSV file stores tabular data as plain text, with values separated by commas or another delimiter.
How do I open a CSV file?
Choose a CSV file above to preview its rows and columns directly in your browser.
Can I convert CSV to JSON?
Yes. RomitCSV includes a CSV to JSON converter for turning tabular rows into JSON data.
Are uploaded CSV files stored?
The homepage reads your selected file in the browser and temporarily saves it in browser storage so the CSV Table Viewer can open it. The viewer clears that pending copy after loading.