Replace Tabs with Spaces

Free online tool to convert tabs to spaces and spaces to tabs. Ideal for developers, editors, and anyone formatting code or text.

Convert tabs to spaces with customizable tab size, or convert spaces back to tabs. Remove all tab characters, merge consecutive tabs, and normalize indentation instantly.

All processing happens locally in your browser. No signup, no uploads, and your code and text stay private.

Options

Actions

Frequently Asked Questions

How do I use this tab and space converter?
This tool converts between tabs and spaces, removes tabs, or merges consecutive tabs. Paste your text into the input area, choose a conversion mode, set the tab size, and click Convert Text to see the result.
Select 'Convert Tabs to Spaces' or 'Convert Spaces to Tabs' for bidirectional conversion. Use 'Remove all tab characters' to delete tabs entirely, or 'Convert multiple tabs to one tab' to normalize inconsistent tab usage.
Note that this tool works only with plain text; it does not preserve rich text formatting, syntax highlighting, or document structure from code editors or word processors.
Is my text uploaded to a server or stored?
No, all tab and space conversion happens entirely locally in your browser. Your text is never uploaded, transmitted, or stored on any external server during processing.
The tool uses JavaScript running directly on your device to perform the conversions. You can process source code, sensitive documents, and private content with complete confidence.
This privacy-focused approach means your input text and converted output never leave your browser window at any point.
What rules determine how tabs and spaces are converted?
In 'Tabs to Spaces' mode, every tab character is replaced by the number of spaces you specify in the Tab size setting (either 2 or 4 spaces per tab). This is a direct replacement without alignment to column boundaries.
In 'Spaces to Tabs' mode, consecutive groups of spaces matching your tab size are replaced with a single tab character. If your tab size is 4, four consecutive spaces become one tab.
The 'Merge multiple tabs' mode finds two or more consecutive tab characters and replaces them with a single tab. The 'Remove all tabs' mode simply deletes every tab character without replacement.
Are there any limits or edge cases to consider?
Empty input produces empty output. Very large text blocks are processed in the browser, which may cause minor delays on older devices but should handle typical files efficiently.
The 'Spaces to Tabs' conversion only matches exact groupings of your tab size. If you have 5 spaces with a tab size of 4, the first 4 become a tab and the remaining single space stays as is.
Note that the tool does not handle tab stops or column alignment based on character position. Conversions are simple character-for-character replacements, not smart alignment adjustments.
How is this tool different from other tab converters?
This tool offers four distinct modes—tabs to spaces, spaces to tabs, remove tabs, merge tabs—with configurable tab size (2 or 4), visual previews, and support for .txt file uploads.
Unlike many online tools, it requires no signup, runs entirely in the browser for privacy, offers multiple conversion modes in one interface, and provides one-click result copying and text file downloads.
It is particularly useful for developers normalizing code indentation, data analysts cleaning tab-delimited files, and editors preparing text for environments with inconsistent tab settings.