Underscore Remover

An underscore remover converts text that uses underscores (like snake_case or file names) into a more readable format. You can either:

• replace underscores with spaces (best for readability), or
• remove underscores entirely (best for compact strings)

This is handy when you copy a variable name, slug, or filename and want it to look human-friendly in a doc, caption, or UI label.

1. Paste your text: Add snake_case, filenames, or any underscore-separated text.
2. Choose a mode: Replace with spaces or remove underscores.
3. Copy the result: Paste into your doc, UI label, or message.

• Improve readability: user_first_name becomes user first name.
• Clean up filenames: Turn internal naming into something you’d show in a UI.
• Prepare text for formatting tools: Convert to spaces before title casing or sentence casing.

Use case 1: Convert snake_case to readable text

Developers often paste snake_case identifiers into docs or tickets. Replacing underscores with spaces makes it easier for non-developers to read.

Use case 2: Clean up exported filenames

Exports and downloads sometimes use underscores. Replace them with spaces before sharing or publishing.

Use case 3: Prepare labels and headings

If you’re turning system fields into headings (“first_name” → “First name”), removing underscores is a quick first step.

The two modes solve different problems:

Replace underscores with spaces (most common)

Use this when the goal is readability:

• user_first_name → user first name
• order__status → order status (multiple underscores collapse into one space)

This is the best choice when you’re turning internal identifiers into labels, headings, or copy.

Remove underscores entirely (for compact strings)

Use this when you want a tight string and you don’t want spaces:

• my_file_name.txt → myfilename.txt
• abc_def_123 → abcdef123

This can be useful for quick cleanup before pasting into a system with strict character rules — but be careful: removing separators can make words run together.

Recipe 1: snake_case → Title Case heading

1. Replace underscores with spaces.
2. Convert the result to Title Case using Title Case.

Example:

• Input: user_first_name
• After underscore removal: user first name
• After title case: User First Name

Recipe 2: Clean up exported filenames

If you have filenames like report_2026_02_04_final.pdf, replace underscores with spaces to make a shareable label:

• report 2026 02 04 final.pdf

If you’re going to re-save the file, you can decide whether you want spaces or no separators at all.

Recipe 3: Human-friendly UI labels

For UI and dashboards, you often want a softer look:

• Replace underscores with spaces
• Then use Sentence Case to keep it readable without “every word capitalized”

Basic example (Replace with spaces)

Input: user_first_name
Output: user first name

Advanced example (Remove completely)

Settings: Mode = Remove completely
Input: my_file_name.txt
Output: myfilename.txt

Example: Multiple underscores and trimming

Settings: Mode = Replace with spaces
Input: __private__field__
Output: private field

Consecutive underscores collapse into a single space. If your input starts or ends with underscores, you may want to trim leading/trailing spaces afterward.

Multiple underscores become one space

In “replace” mode, consecutive underscores are treated as a separator and become a single space. If you need to preserve exact spacing, you may need a different approach.

You still need capitalization

This tool only changes underscores. If you want User First Name, follow up with a casing tool like Title Case or Sentence Case.

Leading/trailing underscores leave leading/trailing spaces

If your input has underscores at the start or end, replace mode can create leading or trailing spaces. Trim the result if needed.

Underscores inside technical strings

If you’re working with code identifiers, URLs, or database keys, removing underscores can change meaning. This tool is best for making display text (labels, headings, filenames), not for editing real code.

If the output isn’t what you expected:

1. Pick the right mode: replace for readability, remove for compact strings.
2. Trim the result: leading/trailing underscores can create leading/trailing spaces in replace mode.
3. Handle other separators: this tool only touches underscores. If you also have dashes or dots, use Text Replacer for more control.
4. Convert case last: do underscore removal first, then Title Case / Sentence Case as a finishing step.

• Replace underscores with spaces first, then use Title Case to create clean headings.
• For developer formats, convert between styles using Snake Case or Kebab Case.
• If you need to remove all whitespace after replacing underscores, use Whitespace Remover.
• For the cleanest results, replace underscores first and then trim the final string (especially if your input starts/ends with underscores).
• If you’re cleaning a list of values, paste multiple lines — the tool will handle all underscores throughout the text.
• For documentation and tickets, a solid default is: underscore removal → Sentence Case → quick manual review for acronyms and brand names.

• It only changes underscores (_). It won’t touch dashes, dots, or other separators.
• It doesn’t change capitalization — pair it with a case tool if you need Title Case.
• In replace mode, multiple underscores collapse into a single space. If you need to preserve exact spacing, you’ll need a different approach.
• It doesn’t automatically trim leading/trailing spaces in replace mode, so you may want to trim the final result.

• Convert other naming styles with the Camel Case Converter and Kebab Case Converter.
• Clean up pasted content with the Remove Formatting Tool.
• Replace specific strings using the Text Replacer.

This tool runs locally in your browser. Your input isn’t uploaded or stored. No account is required.