Text Case Converter
Paste any block of text and instantly convert it between UPPERCASE, lowercase, Sentence case, Title Case, and programming-style formats like camelCase, snake_case, kebab-case, and PascalCase — useful for cleaning up copy or renaming variables consistently.
UPPERCASE
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
lowercase
the quick brown fox jumps over the lazy dog
Title Case
The Quick Brown Fox Jumps Over The Lazy Dog
Sentence case
The quick brown fox jumps over the lazy dog
camelCase
theQuickBrownFoxJumpsOverTheLazyDog
snake_case
the_quick_brown_fox_jumps_over_the_lazy_dog
kebab-case
the-quick-brown-fox-jumps-over-the-lazy-dog
How it works
- 1
Paste your text into the input box.
- 2
Pick a target case from the list of options.
- 3
The converted text appears instantly.
- 4
Copy the result with one click.
What people use it for
- Converting a heading between title case and sentence case for a style guide.
- Turning a label into camelCase, snake_case or kebab-case for code.
- Fixing text that arrived in all caps from a form or an import.
- Normalising column names or keys during a data cleanup.
Supported formats & options
| Cases | UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case |
|---|---|
| Input | Any text, including phrases already in a programming case style |
Key advantages & benefits
Covers coding and writing cases
Both prose formats (Title Case, Sentence case) and code formats (camelCase, snake_case) are supported in one tool.
Instant conversion
No button to click and wait for — results update as soon as you paste or type.
Handles multi-word phrases cleanly
Punctuation and multiple words convert sensibly rather than mangling the text structure.
One-click copy
Grab the converted text instantly without manually selecting and copying.
Limits & things to know
- Title case rules differ between style guides on which short words stay lowercase. Check the result against the guide you follow.
- Programming cases split on spaces, underscores and hyphens, so an input that already mixes conventions can split in unexpected places.
- Acronyms are treated as ordinary words, so ID or API may not survive a conversion the way you intend — fix those by hand after converting.
Troubleshooting
An acronym was lowercased
Case conversion cannot know which uppercase runs are acronyms. Restore them manually after converting.
camelCase output split in the wrong place
The splitter uses spaces, underscores and hyphens as boundaries. Normalise the input to one convention first, then convert.
Privacy & data handling
Case conversion happens in the page as you type. Nothing is uploaded or stored.
Case Converter — Change Text to Title Case, Upper & Lower Online
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case and kebab-case in one click. A free online case converter that fixes a caps-lock accident or reformats a list of identifiers without any retyping.
- Title case converter for headlines — capitalise headings and article titles consistently instead of eyeballing which small words should stay lowercase.
- Developer casing formats — camelCase, PascalCase, snake_case and kebab-case conversion for variable names, database columns, CSS classes and file names.
- Fix caps lock instantly — paste a paragraph typed in all caps and get clean sentence case back, punctuation and line breaks intact.
- Bulk conversion — run the change across an entire list or document at once — there is no character limit and no per-conversion charge.
- Private and instant — the transformation happens in your browser as you paste, so nothing is uploaded and there is no wait.
Free, unlimited and no account needed. Count the result with the Word Counter, or turn a finished heading into a URL with the Slug Generator.
Frequently asked questions
What case formats are supported?
UPPERCASE, lowercase, Sentence case, Title Case, camelCase, PascalCase, snake_case, and kebab-case are all available.
Does it work on multiple paragraphs at once?
Yes, you can paste as much text as you need and it converts the whole block at once.
Will Title Case correctly skip small words like 'the' or 'of'?
Standard Title Case rules are applied, capitalizing major words while keeping common short words lowercase unless they start the sentence.
Can I use this to rename variables in code?
Yes — converting a phrase to camelCase, PascalCase, or snake_case is a common use case for naming variables, functions, or files consistently.
Is there a text length limit?
No practical limit — conversion is a lightweight text operation that runs instantly even on longer documents.