Case Converter
Switch text between UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
How to convert text case
Paste your text into the top box, then click the style you want — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case. The converted text appears below; click Copy result to grab it.
Where each case is used
Title and sentence case are for headings and prose; UPPERCASE and lowercase for normalising data; camelCase, snake_case and kebab-case for variable names, database columns and URL slugs respectively.
Questions
What's the difference between Title Case and Sentence case?
Title Case capitalises the first letter of every word, the way headlines are written. Sentence case capitalises only the first letter of each sentence, leaving the rest lowercase.
How does camelCase / snake_case conversion work?
Your text is split into words — on spaces, hyphens, underscores and existing capital letters — then re-joined. camelCase lowercases the first word and capitalises the rest with no spaces; snake_case and kebab-case join lowercase words with an underscore or hyphen.
Will it keep my numbers and symbols?
Letter-case changes (upper, lower, title, sentence) leave digits and punctuation untouched. The programmer cases (camel, snake, kebab) keep letters and digits and use the rest as word boundaries.