Split Column in Excel Files Online

What delimiters can I use to split a column in a Excel 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 Excel 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 Excel 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.