Case Converter
Last updated: April 29, 2026UPPERCASE, lowercase, Title Case and more.
This case converter instantly transforms text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and CONSTANT_CASE — every common case in one tool. Paste a block of text, pick the format and copy the result in a click. It runs entirely in your browser with no sign-up, so your text is never uploaded.
How to use Case Converter
This free case converter instantly transforms your text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case. Paste any block of text, pick the format you need, and copy the result in one click. It runs entirely in your browser with no sign-up, and your text is never uploaded.
Read the full guide: Case Converter: Change UPPERCASE, lowercase & Title Case
- 1Paste or type the text you want to reformat into the input box.
- 2Choose the target case, such as UPPERCASE, Title Case, camelCase or snake_case.
- 3Copy the converted text and paste it wherever you need it.
Many case styles
Switch between sentence, title, upper, lower and programmer styles like camelCase and snake_case.
Instant conversion
Your text is reformatted the moment you pick a case, with no buttons to wait on.
No data leaves your device
All conversion happens locally in your browser, so sensitive text stays private.
Convert UPPERCASE to lowercase (and back)
Fix text that was typed with caps lock on, or shout-case a heading, by switching between UPPERCASE and lowercase instantly — no retyping.
Title Case and Sentence case for writing
Capitalise a headline properly with Title Case, or normalise a pasted block to Sentence case so only the first word and proper nouns are capitalised — handy for headings, titles and prose.
camelCase, snake_case & kebab-case for code
Convert a label into the identifier style you need — camelCase for JS variables, snake_case for Python and SQL, kebab-case for CSS classes and URL slugs, or CONSTANT_CASE for constants.
Clean up inconsistent casing
Paste messy, mixed-case text and standardise it to one style in a click — useful for tidying spreadsheet columns, lists and imported data before you reuse it.
Case Converter — frequently asked questions
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every major word, which suits headings and titles. Sentence case only capitalizes the first word and proper nouns, matching normal prose.
Can it convert text to camelCase or snake_case for code?
Yes, it supports developer-friendly formats including camelCase, snake_case and kebab-case. These are useful for variable names, file names and URL slugs.
Will converting change my original wording?
No, the converter only changes letter casing and word separators. The actual words and their order stay exactly the same.
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