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Insert csv columns
Edit your CSV files online effortlessly with Insert CSV Columns. This free tool lets you upload or paste CSV data, insert new columns at any position, and preview the results instantly. Headers are fully supported, and row count validation prevents errors. Choose from multiple encodings, including UTF-8 and ISO-8859-1, to preserve your data integrity.
Preview (first 20 rows)
Result
Frequently Asked Questions
It allows you to add new columns to any CSV file at specific positions while preserving headers and data integrity.
Simply upload your CSV file or paste your data, choose where to insert new columns, and preview the results instantly.
Yes, you can insert as many columns as needed and customize their positions within your CSV file.
Yes, the tool fully supports headers and ensures new columns are correctly aligned with existing data.
The tool supports multiple encodings, including UTF-8 and ISO-8859-1, so your data remains accurate after editing.
Yes, the tool checks that all rows match the expected length to prevent errors when inserting columns.
Yes, a live preview shows your CSV after column insertion so you can confirm the results before downloading.
Yes, after inserting the columns, you can download the updated CSV file immediately.
No, this tool works entirely in your browser with no installation or registration required.
Data analysts, developers, marketers, and anyone working with CSV files who needs to insert columns quickly and accurately.