Text case types explained
- UPPER CASE: every letter capitalized; common for acronyms and emphasis (use sparingly in prose).
- lower case: no capitals; typical for body text in many languages and for Unix-style commands.
- Title Case: major words capitalized; used for headlines, book titles, and UI labels depending on style.
- Sentence case: only the first letter of each sentence uppercase (plus proper nouns you keep).
- camelCase: words joined; the first word is lowercase and later words start with capitals (
myVariableName) in JavaScript and APIs. - snake_case: lowercase words separated by underscores (
row_count), common in Python, SQL, and config keys.
When to use each case
Use title case or sentence case for headings depending on your brand or publication style. Use lower case for long-form reading comfort. In code, follow the language: camelCase or PascalCase for JavaScript and C# types, snake_case for many databases and Python modules. SCREAMING_SNAKE_CASE often marks constants.
AP style title case
Associated Press title case capitalizes the first and last word of a headline and all “major” words. Articles (a, an, the), short conjunctions (and, but, for, nor, or, so, yet), and short prepositions (typically three letters or fewer, such as in, on, at, to, of, by) usually stay lowercase unless they are the first or last word. Always double-check proper nouns and hyphenated compounds against the current AP Stylebook.
FAQ
- Is my text uploaded when I use the case converter?
- No. The conversion runs in your browser only.
- What is the difference between title case and sentence case?
- Title case capitalizes most words in each line or phrase. Sentence case capitalizes the start of each sentence and leaves most other words lowercase.
- Does this tool produce camelCase or snake_case automatically?
- Those styles depend on word boundaries. Use spaces to separate words first, then manually join or underscore as your coding style requires. This page focuses on plain-text case transforms.