CSV Converter
Free CSV converter that runs entirely in your browser. No upload, no signup — convert to CSV or from CSV into 200+ supported formats in one click.
Drop any file here or click to browse
All file types supported
About CSV
CSV
CSV (Comma-Separated Values) is a plain-text format for storing tabular data where each row is a record and fields are separated by commas. CSV is the simplest and most universal format for exchanging tabular data between spreadsheets, databases, and statistical software. CSV files are supported by virtually every spreadsheet and data-processing tool.
- Developer
- RFC 4180 (IETF)
- Initial release
- 2005 (RFC)
- Compression
- Uncompressed
- Color depth
- 1-bit
- Transparency
- No
Best for
- Exchanging tabular data between tools
- Importing data into databases
- Statistical software data input
- Simple data export and backup
- Universal spreadsheet data interchange
Pros
- +Simplest and most universal tabular format
- +Plain-text and human-readable
- +Supported by virtually every data tool
- +No proprietary dependencies
Cons
- −No types, formulas, or formatting
- −No charts or multi-sheet support
- −Comma and newline escaping can be tricky
- −Encoding ambiguities (UTF-8 vs others)
How to convert with the CSV converter
- 1
Choose the CSV file you want to convert from your PC, Mac or mobile device, or simply drag and drop it onto the page.
- 2
When your file is uploaded, the output format is preset to CSV. You can add more files to batch-convert them together.
- 3
Click the gear icon and tweak codec, quality, resolution or other options if you need them, then apply to all files if you want.
- 4
Click the Convert button. When conversion completes, download the result to your computer or save it back to Google Drive / Dropbox.
Frequently Asked Questions
What is a CSV file?▼
CSV (Comma-Separated Values) is the universal spreadsheet format — plain text where columns are separated by commas and rows by line breaks. Every spreadsheet app, database, and programming language reads it.
Why convert CSV to XLSX?▼
XLSX keeps formatting, formulas, and multiple sheets, and it handles large files and special characters reliably. CSV strips all formatting and can garble non-Latin text in some apps.
Why convert XLSX to CSV?▼
CSV is the lingua franca for data import — banks, CRMs, databases, and analytics tools all accept it. It is also much smaller and opens instantly in any text editor.
Does CSV support formulas or formatting?▼
No. CSV holds raw data only — no formulas, colors, fonts, or multiple sheets. For styled, calculated spreadsheets, use XLSX.
Will converting CSV lose my data?▼
No — every row and value is preserved. Only Excel-specific formatting and formulas are lost when converting from XLSX to CSV.
Supported Conversions
Specific converters
100% Free
No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.
No Signup Required
Start converting immediately without creating an account or sharing email address.
Private & Secure
Your files never leave your device. All processing is completed locally for maximum privacy.
Batch Conversion
Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.
Runs in Browser
Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.
200+ Formats
Supports a wide variety of formats including images, documents, audio, video, and more.
CSV Converter Quality Rating
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