Split Column in CSV Files Online
Split a column into multiple columns by delimiter in CSV files directly in your browser. Turn "First Last" into separate first and last name columns — no upload required.
Drop your .csv file here
or click to browse — max 50 MB
About this tool
Split a single column in a CSV file into multiple columns by a delimiter. Turn "First Last" into separate first-name and last-name columns, or split pipe-delimited codes into individual fields.
Frequently Asked Questions
What delimiters can I use to split a column in a CSV file?
Any single character — comma, space, hyphen, pipe, underscore, or a custom character you enter. The split applies to every row in the column.
What are the output columns named after splitting a column in a CSV file?
The original column name with a numeric suffix: col_1, col_2, and so on. You can rename them afterwards using the Rename Columns tool.
What happens if a value has fewer parts than other rows when splitting a CSV column?
Short values produce null in the extra output columns for that row. No data is lost from other columns.
Is my data private?
Yes — completely. Your file is never uploaded to any server. Everything runs locally in your browser using WebAssembly — processing happens entirely inside your tab. Once you close the tab, nothing is retained.
What is the maximum file size?
The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines handle 500 MB to 1 GB comfortably.
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