Case Converter
Convert text between six cases with one click: UPPERCASE, lowercase, Title Case, Sentence case, camelCase and snake_case. It saves retyping a heading you accidentally left in caps lock, and gives developers the naming conventions they need without hand-editing each word.
How to convert text case
- Paste or type your text.
- Tap the case style you want.
- Copy the result from the output box.
When you'd use this
- Fixing caps lock mistakes — Rescuing a paragraph typed with caps lock on.
- Headings and titles — Putting a heading into proper title case for a document.
- Code and variables — Turning a phrase into camelCase or snake_case for a variable name.
- Data tidying — Normalising names or labels pasted from an inconsistent source.
Good to know
- Six conversions — UPPERCASE, lowercase, Title Case, Sentence case, camelCase and snake_case, each on its own button.
- Title case capitalises every word — It does not apply the editorial rules that keep short words like and or of lowercase, so a title may need a quick manual check.
- Sentence case only capitalises the start — It capitalises the first letter of each sentence and lowercases the rest, so proper nouns will need fixing by hand.
- Your text stays in the browser — Conversion happens locally and nothing is uploaded.
Frequently asked questions
Can I convert back?
Yes — just tap a different case style; the result box always shows the latest conversion.
What's camelCase and snake_case used for?
They're common naming styles in programming — camelCase for variables in JavaScript, for example, and snake_case in Python.
What is the difference between title case and sentence case?
Title Case Capitalises Every Word, like this. Sentence case capitalises only the first letter of each sentence, like this one.
What are camelCase and snake_case for?
Both are naming conventions in programming. camelCase joins words with each new word capitalised, as in userFirstName; snake_case joins them with underscores, as in user_first_name.
Will it fix names that should stay capitalised?
No. Sentence case and lowercase will lowercase proper nouns along with everything else, so names and places need checking afterwards.