Case Converter

Convert text case instantly

This free case converter helps you transform text into common casing styles used in writing, URLs, and everyday editing. It runs entirely in your browser, so conversions happen instantly and your text stays on your device.

Supported case styles

UPPERCASE

Uppercase is useful for headings, labels, short banners, and emphasis. It’s also a quick way to normalize inconsistent user input when you need a uniform look.

lowercase

Lowercase is commonly used for normalization (for example, when comparing strings or preparing text for case-insensitive systems). It’s also handy for cleaning up accidental Caps Lock input.

Sentence case

Sentence case is great for longer paragraphs where you want a clean, readable style. This converter lowercases the text and then capitalizes the first letter to produce a simple “sentence case” result.

Title Case

Title Case is used for headlines and titles. It can improve readability for headings, blog post titles, and section names. Different style guides have different Title Case rules—this tool applies a simple word-based capitalization for speed and consistency.

Toggle case

Toggle case flips each letter’s casing: uppercase becomes lowercase and lowercase becomes uppercase. It’s helpful when text has the wrong casing and you want a quick inversion without retyping.

Performance and privacy

The converter runs client-side only, so it’s fast and works offline after the page loads. It also keeps your text private: input is processed in the browser and not uploaded for conversion.

Tips

• Use Title Case for headings, and Sentence case for body text.
• Use Toggle case to quickly fix accidental Caps Lock or mixed-case mistakes.
• Use the Copy output button to paste results into documents, emails, or forms.