Paste your UTF-8 text below and get clean, formatted CSV in seconds. Everything runs in your browser — your data never leaves your device.
CSV output will appear here...Paste UTF-8 text to convert to CSV
Convert UTF-8 text to CSV in three simple steps.
Paste your UTF-8 text directly or upload a file. Any structured text works.
Choose your output delimiter, toggle headers, and adjust settings to match your needs.
Copy the converted output or download it as a properly formatted CSV file.
A UTF-8 to CSV Converter is a tool that transforms UTF-8 encoded text data into properly formatted Comma-Separated Values (CSV) files. UTF-8 is the universal character encoding standard for the web, supporting every character from every language. When you have structured text data encoded in UTF-8, this tool converts it into CSV format that spreadsheets and databases can read directly.
This is especially useful when working with international data that contains accented characters, non-Latin scripts, or special symbols. The converter preserves all UTF-8 characters while restructuring the data into clean CSV with proper delimiters and quoting.
Spreadsheet compatibility
Import UTF-8 data directly into Excel, Google Sheets, or any spreadsheet application.
Database imports
Prepare data for SQL databases, data warehouses, and ETL pipelines.
International character support
Preserve accented characters, CJK scripts, emoji, and special symbols.
API data preparation
Convert UTF-8 API responses into CSV for reporting and analysis.
The tool checks for Byte Order Marks (BOM) at the start of the file, which provide the most reliable encoding indicator. When no BOM is present, it analyzes byte patterns to distinguish UTF-8 from single-byte encodings like ISO-8859-1 and Windows-1252. It examines null byte distribution to detect UTF-16 variants.
ISO-8859-1 (Latin-1) maps bytes 0x80�0x9F to control characters, while Windows-1252 maps them to printable characters like smart quotes (' , ", ") and dashes (?, ). Most CSV files labeled as "Latin-1" are actually Windows-1252. This tool handles both correctly.
Microsoft Excel on Windows assumes CSV files are encoded in the system's default encoding (often Windows-1252) unless a UTF-8 BOM is present. Without a BOM, Excel may display accented characters and symbols incorrectly. Adding a UTF-8 BOM (bytes EF BB BF) tells Excel to use UTF-8 decoding.
Yes. All processing happens entirely in your browser using the TextDecoder and TextEncoder APIs. Your data is never sent to any server. You can verify this by disconnecting from the internet and using the tool offline.
The conversion only changes the character encoding – delimiters, row structure, quoting, and all CSV formatting are preserved exactly. The tool decodes the original bytes using the source encoding, then re-encodes the resulting text as UTF-8.
For a complete CSV workflow, explore our other free tools:
All processing happens in your browser. Your data never leaves your device.