What's the difference between Title Case and Sentence case?

Title Case capitalises the first letter of every significant word ("The Quick Brown Fox"). Sentence case capitalises only the first letter of each sentence and proper nouns ("The quick brown fox").

Does camelCase strip punctuation?

Yes — camelCase, snake_case, kebab-case and CONSTANT_CASE all strip punctuation and join words, because that's what code identifiers require.

Will it preserve line breaks?

Yes. Newlines and paragraph breaks are kept intact; only the casing of letters changes.

Does it handle accented characters?

Yes — é, ñ, ü, ß and other Unicode letters are cased correctly using JavaScript's locale-aware case mapping.

Case Converter — Free Online Tool

What is the Case Converter?

The Case Converter is a free online text tools from Markvibe. Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case. It runs entirely in your browser — your data never gets uploaded — and works on desktop, tablet and mobile with no sign-up.

Reviewed by The Markvibe Team · Last updated 2026-06-28

Example

A worked example so you know exactly what to expect.

Input

hello world from markvibe

Output

UPPER: HELLO WORLD FROM MARKVIBE
Title: Hello World From Markvibe
camel: helloWorldFromMarkvibe
snake: hello_world_from_markvibe

How to use Case Converter

1Paste your text into the input box — the converter detects mixed casing automatically.
2Pick a target case: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE or aLtErNaTiNg.
3Title Case follows AP style — short articles, conjunctions and prepositions stay lowercase unless they start the title.
4Hit Copy to send the converted text to your clipboard, or click Swap to flip uppercase↔lowercase in one move.
5Use the camelCase / snake_case modes when renaming variables, JSON keys or database columns.