Convert Base64 encoded strings back to CSV (Comma Separated Values) files. Decode and download spreadsheet data instantly.
Paste your Base64 encoded CSV data to convert it back to a downloadable spreadsheet file
Enter the Base64 string representing a CSV (Comma Separated Values) file
CSV Analysis
Automatically detects rows, columns, and delimiters
Delimiter Detection
Supports comma, semicolon, and tab delimiters
Header Detection
Identifies if CSV contains header row
Data URL Export
Export as complete data URL for use in web applications
Valid Format
Input must be valid Base64 encoded CSV data
Character Encoding
Supports UTF-8 and Latin-1 character encodings
Privacy
Your data never leaves your browser
Compatibility
Works with Excel, Google Sheets, and database tools
Converting Base64 encoded data back to CSV (Comma Separated Values) files allows you to retrieve tabular data that was previously encoded for transmission or storage. CSV files are plain text files where values are separated by delimiters, making them universally compatible with spreadsheet applications and database systems.
The tool automatically analyzes the CSV structure, detecting the delimiter (comma, semicolon, or tab), counting rows and columns, and identifying header rows. This ensures you're working with valid CSV data before downloading it.
Exchange tabular data between different systems and applications
Decode CSV data received from APIs as Base64 strings
Prepare CSV files for database import operations
Extract data for analysis in Excel, Google Sheets, or Python
Convert Base64 string to text data
Detect delimiter and count rows/columns
Save the reconstructed spreadsheet file
CSV (Comma Separated Values) is a plain text file format where data values are separated by delimiters (usually commas). It's widely used for exchanging tabular data between spreadsheet applications and databases.
The tool automatically validates the decoded data by checking for consistent column structure and valid CSV formatting. If the data is not a valid CSV, you'll see an error message.
The tool automatically detects and supports comma (,), semicolon (;), and tab (\t) delimiters. It will identify the most likely delimiter based on the data structure.
Yes! The downloaded CSV file can be opened directly in Microsoft Excel, Google Sheets, LibreOffice Calc, or any other spreadsheet application.
Yes! This Base64 to CSV converter is completely free with no registration required. All processing happens locally in your browser for maximum privacy.