Free Letter Case Converter
Seven case styles, one click each. This free converter transforms your text into UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Words, aLtErNaTiNg or iNvErSe case — the fastest way to fix badly cased text anywhere.
How to Use the Letter Case Converter
- Paste or type your text.
- Click any of the seven case buttons.
- The converted result appears instantly.
- Copy or download it.
Features
Seven transformations: UPPERCASE, lowercase, Title Case, Sentence case (capitalizes after . ! ?), Capitalize Each Word, aLtErNaTiNg cAsE and iNvErSe cAsE. Sentence case correctly handles multiple sentences, and alternating case skips non-letters so punctuation does not break the pattern. Copy and download buttons on every result.
Benefits & Use Cases
Fix accidentally ALL-CAPS emails before sending. Format headings for documents and slides. Create stylized text for social bios and memes with alternating case. Developers normalize user input casing before validation or storage.
Tips
Sentence case lowercases everything first, so proper nouns will need manual fixing afterwards. For headlines that follow APA/Chicago rules, use the dedicated Title Case Converter — it keeps small words lowercase. Alternating case starts lowercase; run inverse case first if you want to start uppercase.
Frequently Asked Questions
Is the letter case converter free?
Yes, free with no limits.
Which case styles are included?
UPPERCASE, lowercase, Title Case, Sentence case, Capitalize Words, aLtErNaTiNg and iNvErSe — seven in total.
How does Sentence case work?
It lowercases everything, then capitalizes the first letter of the text and the first letter after each . ! or ?.
Will it mess up proper nouns?
Modes that lowercase (sentence, title) will lowercase names too — review and fix names manually.
Is my text uploaded?
No, conversion happens locally in your browser.
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