Free CSV Tools Online

Strip leading and trailing spaces from every cell in your CSV or spreadsheet with one click.

Clean up blank rows from CSV and Excel files automatically. Get a compact, analysis-ready dataset.

Delete columns with no data from your CSV or spreadsheet. Simplify your schema automatically.

Validate your CSV file and get a detailed report of formatting issues, encoding problems, and inconsistencies.

Convert CSV files to Excel (XLSX) or Excel files to CSV online. Fast, free, and no software required.

Sort your CSV or Excel file by any column — alphabetically or numerically, ascending or descending.

Add an auto-incremented ID or row number column to your CSV or Excel file. Set the column name, starting value, and position.

Keep only the first or last N rows of your CSV or Excel file. Ideal for sampling large datasets or taking the most recent records.

Combine two or more columns into a single column with a separator. Great for building full names, addresses, or IDs.

Split one column into multiple columns by a delimiter. Separate full names, addresses, or compound values into distinct fields.

Upload a CSV file and instantly convert it to a clean JSON array. Free, no signup required.

Upload a JSON file (array of objects) and convert it to a clean CSV instantly. Free, no signup required.

Upload a CSV and generate SQL INSERT statements ready to paste into your database. Free, no signup required.

Extract a random sample of N rows from a large CSV. Perfect for testing, ML datasets, and audit sampling.

Insert a new column into any CSV or spreadsheet file, with a default value for every row.

Pull all distinct values from a single column and export them as a clean list. Great for building lookup tables.

Upload a CSV and instantly generate a clean HTML table. Paste it straight into any webpage or email.

Convert a CSV file to a Markdown table in one click. Perfect for README files, wikis, and documentation.