CSV Find & Replace
Find and replace values across your entire CSV dataset
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FAQ
Can I use regular expressions with the find and replace tool?
Yes. Enable the 'Regex' option and enter any valid regular expression in the search field. For example, use \d{4}-\d{2}-\d{2} to find all ISO date strings, or \bN/A\b to match 'N/A' as a whole word. The replacement field supports backreferences like $1 for captured groups.
Can I limit the find and replace to a specific column?
Yes. By default the tool searches across all columns, but you can select one or more specific columns to restrict the search. This is useful when you have the same value in multiple columns but only want to replace it in one — for example, updating 'USA' to 'United States' only in the Country column, not the Description column.
Does the tool preview changes before applying them?
Yes. Before downloading the modified CSV, the tool shows a preview of every cell that will be changed — the original value, the matched text, and the replacement. You can review all changes and cancel if something looks wrong.
Is the find and replace case-sensitive?
By default it's case-insensitive, so searching for 'usa' will match 'USA', 'Usa', and 'usa'. Enable the 'Case-sensitive' toggle to match exact casing only. This is useful when your data has intentional case differences you want to preserve.
Is my CSV data uploaded to a server?
No. All processing happens entirely in your browser using JavaScript. Your data never leaves your device and is never sent to any server. Once you close the tab, the data is gone.
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