How to use the case converter
- Paste your text into the box.
- Click the case you want — the text transforms instantly.
- Hit Copy to grab the result.
The case types explained
- UPPERCASE — every letter capitalized. Good for headlines and emphasis.
- lowercase — no capitals. Useful for tags, URLs and a casual tone.
- Title Case — first letter of each word capitalized. Standard for titles and headings.
- Sentence case — first letter of each sentence capitalized. Natural body text.
Benefits
- Convert text to UPPERCASE, lowercase, Title Case or Sentence case in one click.
- Runs entirely in your browser — nothing is uploaded.
- Handy for cleaning up pasted text, fixing shouty all-caps, or formatting headlines.
- Free and unlimited.
Limitations to know
- Title Case uses simple rules and may capitalize small words (like "a" or "the") that a strict style guide would leave lowercase.
- It changes capitalization only — it does not fix spelling or grammar.
- Some language-specific casing rules are not handled.
Common mistakes to avoid
- Trusting Title Case for AP or Chicago style without a quick manual check.
- Running code or identifiers through it and breaking names that are case-sensitive.
- Losing intentional capitals, such as acronyms, when forcing lowercase.
Alternatives
To count the result against a limit, use the Word Counter. To turn a title into a URL, use Text to Slug, and to clean up copied text use Remove Line Breaks.
Last updated: August 2026 · Reviewed by the AI Toolbox editorial team.
Frequently asked questions
Does it work on long documents?
Yes — there's no length limit, and it converts instantly.
Is my text stored?
No, everything happens locally in your browser.
Is it free?
Completely free, no sign-up.