Free Online CSV Generator
You can build custom CSV files from scratch using a visual column builder that supports 10 distinct data types. Simply define your column names, select types like Full Name or UUID, set your row count, and click Generate to see your data instantly. The generated output appears in a formatted table with sticky headers and numbered rows for easy navigation. If you already have data, just drag and drop your file into the workspace to get started. Everything happens right in your browser, ensuring your private information never leaves your device.
CSV Builder
Define custom columns with data types and generate realistic sample CSV data with configurable row counts, delimiters, and quoting.
CSV Viewer
Upload CSV files and preview them as formatted tables with sticky headers, row numbers, and a raw CSV text view.
CSV Sorter
Sort CSV rows by any column in ascending or descending order with automatic numeric and alphabetical detection.
CSV Filter
Search across all columns and instantly filter rows matching your query with case-insensitive real-time matching.
CSV Stats
Analyze per-column statistics including unique values, empty cells, string lengths, and numeric min, max, and average.
Deduplicator
Remove exact duplicate rows from CSV data, keeping only the first occurrence of each unique row.
Online CSV Generator with Custom Columns and Data Types
Manually creating test data or sample spreadsheets is often a tedious process that leads to inconsistent formatting. This tool simplifies the task by providing a visual builder with support for names, emails, dates, and even phone numbers. You can generate up to 10,000 rows at once, customize your delimiters, and set specific quoting rules to match your needs. Every time you click Generate, you get fresh and realistic random data that is ready for you to download or copy immediately.
Upload Existing CSV Files
If you have an existing CSV file, just upload it or drag it directly into the interface. The tool automatically detects your delimiter by scanning the first line and displays your data in a clean, formatted table. Once your file is loaded, you can easily sort through rows, apply filters, remove duplicates, or perform a detailed analysis. The generator works seamlessly with .csv, .tsv, and .txt formats using common delimiters like commas, semicolons, tabs, and pipes.
Configure Delimiters and Quoting
Since different systems require specific CSV configurations, you can choose from various delimiters like commas for standard files or semicolons for European locales. You also have full control over quoting, with options for RFC 4180 compliance, quoting all fields, or using no quotes at all. Use the header row toggle to decide whether column names should be included in your final export.
Sort, Filter, and Deduplicate Your CSV Data
Raw data often requires a bit of cleanup before it becomes truly useful. With the CSV Sorter, you can organize your rows by any column with a single click, using automatic detection for numeric or alphabetical order. If you need to find specific entries, the real-time filter checks every cell and narrows down your list as you type. You can also use the Deduplicator to quickly strip away identical rows and keep your dataset unique. All these changes are reflected instantly in the table view, ready for you to download or copy.
Column Statistics and Data Summary
Use the CSV Stats tool to get a deeper look at your data through column-level analysis. You can quickly see the total row count, file size, and other key metrics in the summary cards at the top. For each column, the tool identifies unique values, empty cells, and string length ranges, while providing averages and extremes for numeric data. This makes it easy to validate your data quality and spot any missing information before you import it into a database or spreadsheet.
Your Data Stays Private in Your Browser
This generator processes everything locally in your browser using client-side JavaScript, meaning your files never touch a server. There is no need for an account, and no data is ever stored on our end; once you close the tab, your session is gone. By leveraging the browser File API and standard DOM tools, all sorting, filtering, and analysis happen right on your device. Your privacy is guaranteed because there are no network requests, cookies, or tracking involved with your CSV content.
Related CSV and Data Tools
If you work with CSV files regularly, these tools complement what you can do here:
- CSV to JSON -- convert CSV data to JSON, TSV, HTML table, Markdown, or SQL
- CSV to Multiline -- convert CSV values to one-per-line format
- CSV to HTML Table -- convert CSV data into styled HTML tables
- JSON Formatter -- format, minify, validate, and transform JSON data
- Code Formatter -- format and beautify code in multiple languages
- Base64 Decoder -- decode Base64 encoded strings and files