Convert tabs into spaces

This tool converts tab characters in your text into spaces. It provides flexible options so you can convert all tabs into a fixed number of spaces, convert only the tabs in lines matching specified substrings, convert tabs in all lines except those containing specified substrings, or replace each tab using a custom formatted string. Simply enter your text, adjust the options below, and click the process button.

Input Text

Output Text

Conversion Modes:

Convert All Tabs to Spaces
Replaces every tab character with a fixed number of spaces. Specify the number of spaces below.

Convert Only Tabs in Lines Matching Specified Substrings
Converts tabs into spaces only in lines that contain the specified substring(s). Enter a comma‑separated list (e.g., Error, Warning).

Convert All Tabs Except in Lines Containing Specified Substrings
Converts every tab into spaces except in lines that contain the specified substring(s). Enter a comma‑separated list (e.g., DEBUG).

Convert Tabs with Custom Format
Replaces each tab with a custom formatted string. Use {tab} as a placeholder in the format.

Examples:

Convert All Tabs to Spaces

Replaces every tab with the specified number of spaces.

Before:

Name	Age	City
Alice	30	New York
Bob	25	Los Angeles

After (4 spaces):

Name    Age    City
Alice   30     New York
Bob     25     Los Angeles

Convert Only Tabs in Lines Matching Specified Substrings

Only converts tabs in lines that contain the specified substring(s) (e.g., "Error").

Before:

Info: System running.
Error:	Failed to load resource.
Warning: Check your connection.
Error:	Timeout occurred.

After (specifying "Error", 4 spaces):

Error:    Failed to load resource.
Error:    Timeout occurred.

Convert All Tabs Except in Lines Containing Specified Substrings

Converts tabs into spaces in all lines except those containing the specified substring (e.g., "DEBUG").

Before:

DEBUG:	Temporary data.
Info:	Data loaded successfully.
DEBUG:	Cache cleared.

After (excluding "DEBUG", 4 spaces):

Info:    Data loaded successfully.

Convert Tabs with Custom Format

Replaces each tab with a custom formatted string.

Before:

Column1	Column2	Column3
Value1	Value2	Value3

After (format "[{tab}]"):

Column1[{tab}]Column2[{tab}]Column3
Value1[{tab}]Value2[{tab}]Value3