Convert Commas to Newlines
Advanced CSV-to-lines converter with sorting, formatting & more
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What is Convert Commas to Newlines?
Convert Commas to Newlines is a text formatting tool that splits comma-separated values (CSV) into separate lines. Each value becomes its own line, perfect for converting horizontal lists to vertical format, preparing data for import operations, or reformatting CSV data into readable lists.
Features
CSV Splitting
Split comma-separated values into individual lines.
Trim Whitespace
Remove extra spaces around each value automatically.
Remove Empty
Skip blank items from consecutive or trailing commas.
Comparison Mode
View CSV and line formats side-by-side.
File Upload & Download
Process CSV files and save converted results.
100% Private
All processing happens locally in your browser.
Common Use Cases
Email List Formatting
Convert comma-separated email addresses from spreadsheets into vertical lists for email clients, mailing list tools, or contact imports.
Data Import Prep
Prepare CSV data for systems expecting line-by-line input. Convert product IDs, user names, or any delimited data into separate lines.
List Conversion
Transform horizontal comma-separated lists to vertical format for better readability. Convert tags, keywords, or categories into organized lists.
Example: Convert Email List
jane@example.com
bob@example.com
Frequently Asked Questions
How do I convert CSV to a vertical list?
Paste your comma-separated values (e.g., 'apple, banana, cherry') into the input area. The tool automatically splits at each comma and displays each item on a separate line. Enable 'Trim Spaces' to remove extra whitespace around items.
What does the Trim Spaces option do?
Trim Spaces removes leading and trailing whitespace from each item. For example, 'apple , banana , cherry' becomes clean lines: 'apple', 'banana', 'cherry' without extra spaces. Highly recommended for clean output.
What does Remove Empty do?
Remove Empty skips blank items created by consecutive commas or trailing commas. For example, 'apple,,banana,' (3 commas) normally creates 4 items (with 2 empty). With Remove Empty enabled, only 'apple' and 'banana' appear, skipping the blanks.
How do I convert a CSV file to separate lines?
Click the 'Upload' button and select your CSV file. Each comma-separated value will be converted to its own line. Enable 'Trim Spaces' and 'Remove Empty' for clean output, then download the result as a .txt file.
Can I convert email addresses from CSV?
Yes! Paste a comma-separated list of emails (e.g., from a spreadsheet export) and each email will appear on its own line. Perfect for importing into email clients, mailing list tools, or contact management systems.
What if my data has commas within values?
This tool splits at EVERY comma. If your CSV has quoted values with commas inside (e.g., '"Smith, John", age, city'), you may need a proper CSV parser instead. This tool works best for simple comma-delimited lists without embedded commas.
Is my data safe and private?
Yes, 100% safe. This tool runs entirely in your web browser using client-side JavaScript. Nothing you paste or upload is ever sent to our servers or stored anywhere. Perfect for sensitive data like email lists or customer information.
Can I see before and after comparison?
Yes! Click the 'Compare' button to see your original CSV format on the left and the line-separated format on the right side-by-side. The statistics panel shows exactly how many commas were found and how many lines were created.
How do I convert this back to CSV?
Use the Convert Newlines to Commas tool to reverse the operation. Set the custom replacement to ', ' (comma + space) for proper CSV formatting.
Can I use this for spreadsheet data?
Yes! Copy a single row or column from Excel/Google Sheets (which appears comma-separated when pasted) and convert it to vertical lines. Useful for creating lists from spreadsheet data or preparing data for different formats.