Text Case Converter
Change the letter case of text with one click.
How to use this tool
Type or paste text, then select a case style. Title and sentence conversion use simple heuristics and may not capitalize names or acronyms correctly.
Your text is processed in this browser. No account required.
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Practical example: Standardizing headings
Paste mixed-case text and choose uppercase for a heading or sentence case for ordinary prose. Copy the result back to your document.
What to check before using the result
Automatic title and sentence casing may not recognize proper names, acronyms or language-specific capitalization.
Frequently asked question
Does this check grammar?
No. It changes letter case rather than meaning or grammar.
For more guidance, visit the OpenToolKit practical guides and check how processing works.