Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case.
Processing: This tool runs entirely in your browser. Your input and any file you open stay on your device — nothing is uploaded to a server.
How to use the text case converter
- Paste your text into the input box.
- Every case variant is generated immediately below it.
- Press Copy on the variant you want.
About this tool
Case conversion looks trivial until you need a specific convention. Prose cases (sentence, title) keep the spaces and change letters; programming cases (camel, snake, kebab, constant) throw the spaces away and re-join the words. This tool does both, and shows every result at once so you can copy the one you need instead of converting repeatedly.
Title case here follows the common editorial rule: capitalise the first and last word, and every word in between except short articles, conjunctions and prepositions. That matches how most style guides set headlines, though house styles differ — check the output before publishing.
Common uses
- Turning a heading into a valid variable or file name.
- Fixing text that arrived in all capitals.
- Normalising imported data before a database load.
Frequently asked questions
- What is the difference between title case and sentence case?
- Title case capitalises most words in the line ('The Quick Brown Fox'). Sentence case capitalises only the first word and any proper nouns ('The quick brown fox').
- Which small words stay lowercase in title case?
- Articles, coordinating conjunctions and short prepositions such as a, an, the, and, or, but, of, in, on, to and for — unless they are the first or last word.
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