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Text Case Converter

Switch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more.

Processed locally

Convert to

Programming cases (camelCase, snake_case…) convert each line separately, so you can paste a list of names. Title Case keeps short words like “of” and “the” lowercase.

Instructions

How to use it

  1. 01Paste or type your text.
  2. 02Choose a case. The result updates instantly.
  3. 03Copy the result.

About

What it does

Retyping text because it was written in the wrong case is tedious. Paste a heading typed in ALL CAPS, a list of database column names, or a title that needs proper capitalisation, and convert it in one click.

Alongside UPPERCASE, lowercase, Title Case and Sentence case, the converter handles programmer cases (camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE) and understands existing identifiers like XMLHttpRequest.

Settings explained

Title Case
Capitalises important words and keeps short words (a, of, the, in…) lowercase unless they start or end the title.
Sentence case
Lowercases everything, then capitalises the first letter of each sentence and the word 'I'.
camelCase, snake_case and friends
Split words on spaces, punctuation and existing capital letters, one line at a time.

Good for

  • Fixing headings accidentally typed in caps lock
  • Formatting article and email subject titles
  • Renaming variables and database columns
  • Turning phrases into URL slugs (kebab-case)

Questions, answered

Which Title Case style does it follow?
A common style shared by AP and Chicago: major words capitalised, short articles, conjunctions and prepositions lowercase except at the start or end.
Does it keep line breaks?
Yes. Every case keeps your line structure; programmer cases convert each line separately.
Does it work with accented and non-Latin letters?
Yes, for scripts that have upper and lower case (Latin, Greek, Cyrillic and others).