Free Online CSV to Multiline Converter
Transform CSV data into a clean multiline format instantly with this specialized converter. Simply paste a row of data like "Alice,Bob,Carol,David" and watch as each value is placed on its own line. Whether you're working with single rows or complex multi-row CSV files, the tool extracts every cell across all rows for easy viewing. You can upload files from your computer, drag and drop them directly, or use the paste button to get started. Best of all, every operation runs locally in your browser to keep your data private and secure.
CSV to Multiline
Split CSV cells into a vertical list. The tool handles quoted fields, multiple rows, and custom delimiters while trimming whitespace automatically.
Multiline to CSV
Merge a list of values back into a single CSV row. Includes automatic quoting for fields containing delimiters or special characters.
Column Extractor
Isolate a single column from your data instantly. Perfect for extracting lists of emails, IDs, or names from larger datasets.
Row Filter
Filter your data by keyword to find specific information. The tool searches all cells while ensuring your header row remains intact.
Delimiter Changer
Switch between comma, semicolon, tab, and pipe delimiters. Values are automatically re-quoted to prevent data corruption.
Line Counter
Audit your dataset by counting rows, columns, and empty cells. Get a clear picture of your data's scale and completeness.
Online CSV to Multiline Converter with File Upload and Custom Delimiters
Break apart CSV data into individual lines in seconds, skipping the need for heavy spreadsheet applications. The intuitive split-pane workspace displays your original CSV on the left and the transformed multiline output on the right, with a resizable divider for custom layouts. Use the options bar to select your preferred delimiter, whether comma, semicolon, tab, or a custom character, and toggle advanced settings like whitespace trimming or skipping empty values. Click convert to see your changes applied in real-time.
Upload CSV Files or Paste Data
Get your data into the workspace effortlessly using multiple input methods. You can browse your computer for .csv, .tsv, or .txt files, drag and drop them directly onto the tool, or use the convenient paste button. Because the tool leverages the native browser File API, your files are never uploaded to a server, ensuring no backend size limits and lightning-fast processing for even the largest spreadsheet exports.
Trim Whitespace and Skip Empty Values
Clean up messy CSV exports by removing trailing spaces or unwanted empty cells with a single click. The "Trim whitespace" feature strips leading and trailing spaces from every value, while the "Skip empty" option filters out blank lines for a more concise result. These settings are enabled by default to save you time, but you can toggle them off whenever you need the raw data exactly as it appears.
Extract Columns, Filter Rows, and Change Delimiters
This versatile workspace offers five additional CSV utilities to streamline your data management. Use the Column Extractor to pull specific columns by index, or apply the Row Filter to isolate rows containing specific keywords while preserving your header. If you need to migrate data between different applications, the Delimiter Changer handles transitions between commas, tabs, and semicolons with ease, automatically re-quoting fields to maintain data integrity.
Count Rows, Columns, and Cells
Get a comprehensive overview of your dataset with the built-in Line Counter. It instantly reports total rows, column counts, and cell statistics, including a breakdown of empty versus non-empty values. This analysis is perfect for auditing large datasets before further processing, and since it runs locally, you get results immediately no matter how many rows you're counting.
Reverse the Conversion with Multiline to CSV
Reverse the conversion process anytime with the Multiline to CSV tool, which joins individual lines back into a standard comma-separated row. It strictly follows RFC 4180 standards, automatically wrapping values in double quotes if they contain delimiters or special characters. It's the ideal way to prepare custom lists for spreadsheet imports or API requests.
Your CSV Data Stays Private in Your Browser
Privacy is built into every tool in this workspace, as all processing occurs directly in your browser using local JavaScript. Your CSV data is never transmitted to a server, stored in a database, or tracked in any way. Once you close the tab, your session and data are completely cleared. With no accounts, cookies, or rate limits to worry about, you can process your files securely using the native browser File and Clipboard APIs.
Related CSV and Data Tools
Explore these complementary CSV and data tools to further streamline your data processing tasks:
- CSV to JSON -- convert CSV to JSON, validate CSV, convert to TSV, HTML Table, Markdown, and SQL
- CSV to HTML Table -- convert CSV data into styled HTML table markup
- JSON Formatter -- format, minify, validate, and transform JSON data
- Text Compare -- compare two text inputs side by side
- Word Counter -- count words, characters, sentences, and paragraphs
- Base64 Encoder Decoder -- encode and decode Base64 strings