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Case Converter

Convert text to UPPERCASE, lowercase, Title Case, and more.

How to use the case converter

  1. Type or paste your text into the box.
  2. Click a case button to transform the text in place.
  3. Copy the result or clear the box to start over.

Paste your text and instantly convert it to uppercase, lowercase, Title Case, Sentence case, camelCase, or snake_case. Works well for formatting headlines, code identifiers, or just cleaning up pasted text.

When to use each text case

Title Case capitalizes the main words and is common in headlines and book titles. Sentence case only capitalizes the first word and proper nouns, which is easier to read for subheadings and buttons. UPPERCASE is for short labels and emphasis, while lowercase is handy for cleaning up text typed with caps lock on.

Programmers use camelCase (myVariableName) for variables in JavaScript and Java, and snake_case (my_variable_name) in Python and databases. Converting text instantly saves retyping when you rename things.

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Frequently asked questions

Can I chain multiple conversions?

Yes, each button transforms the current text, so you can apply one case and then try another to compare results.

Does this tool store my text?

No, all conversion happens locally in your browser and nothing is uploaded or saved.

How do I fix text typed with caps lock on?

Paste it in and click Sentence case or lowercase to convert it instantly.

What's the difference between camelCase and snake_case?

camelCase joins words and capitalizes each one after the first (myFileName). snake_case uses lowercase words joined by underscores (my_file_name).

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