Comma Separating Tool

Free Comma Separating Tool — Convert Lists to CSV & Back

Converting between line-separated lists and comma-separated values is a constant data formatting task for developers, analysts, marketers, and anyone working with databases or spreadsheets. SQL queries need comma-separated values in IN clauses. Spreadsheet imports need CSV format. API calls need arrays. This free Comma Separating Tool converts in both directions instantly — list to CSV and CSV to list — with full control over delimiters, spacing, and quoting.

Paste a list of items (one per line) to join them with commas, or paste comma-separated values to split them into a list. Configure the separator, whether to add quotes around each item, whether to trim whitespace, and whether to remove blank lines.

A common use case is preparing SQL IN clauses: paste a list of IDs, enable double quotes, and get a formatted string like "1234", "5678", "9012" ready to paste directly into your SQL query.

Common Use Cases

SQL IN clauses. Convert a list of IDs or values to a quoted, comma-separated string for SQL WHERE id IN (1,2,3) queries.

Spreadsheet imports. Prepare CSV data for import into Google Sheets, Excel, Airtable, or any spreadsheet application.

API arrays. Format lists as comma-separated strings for API parameters, JSON arrays, or configuration values.

Email and tag lists. Convert a list of email addresses or tags into comma-separated format for bulk import tools, email platforms, and CRM systems.

Related Tools

• Remove Duplicate Lines – Clean your list before converting.
• Word Counter – Count items in your list.
• XML to JSON – Convert between data formats.

Frequently Asked Questions