Online CSV Editor
Secure, client-side CSV editing. Drag & drop a file to begin, or try a sample. Your data never leaves your browser.
Import settings
Import options
Drag & Drop CSV
or click to browse from your computer
Choose an encoding first if imported text from legacy tools usually looks wrong.
Paste Text
Paste CSV data directly from your clipboard.
Load Sample
How to edit a CSV online in 3 steps
- Import your CSV: drag and drop a file or paste CSV text from clipboard.
- Edit and clean: search values, update cells, rename columns, and remove unwanted rows.
- Export: download a cleaned CSV file when your edits are complete.
Help Center
Frequently Asked Questions
Quick answers about editing workflows, privacy, large files, and when to use CSV Editor Online vs Excel.
How can I edit a CSV file online without Excel?
Upload a CSV file or paste CSV text, edit rows and columns in the browser table, then export a cleaned CSV. You can do the full workflow without Excel or Google Sheets.
Is Online CSV Editor free to use?
Yes. Online CSV Editor is free to use for importing, editing, cleaning, and exporting CSV files in your browser.
Does Online CSV Editor upload my files to a server?
No. Online CSV Editor runs client-side in your browser, so your CSV data stays local during normal editing workflows.
Can I open and edit large CSV files in my browser?
Yes, for many real-world CSV files. Performance depends on your device memory, browser, and file complexity, so very large files may be easier to clean in smaller chunks.
How do I fix delimiter or encoding issues in CSV files?
Check whether your source uses commas or semicolons, keep quoting consistent, and export as UTF-8 when possible. Our delimiters and encoding guide includes step-by-step fixes.
More CSV guides
Learn advanced workflows and best practices for editing CSV files efficiently.