Text Case Converter
Convert text to uppercase, lowercase, sentence case, or title case. English casing rules are applied locally in your browser.
Text case conversion tool
Your text is processed on this device and is not uploaded.
What the Four Case Styles Do
UPPERCASE
Capitalizes every letter, useful for short labels or deliberate emphasis.
lowercase
Lowercases every letter to normalize inconsistently styled text.
Sentence case
Lowercases the text and capitalizes the beginning of each sentence.
Title Case
Capitalizes each word; proper nouns and publication style still need review.
How to Use the Converter
- Type or paste text into the editor.
- Select the case style you need; the result replaces the text in the same editor.
- Review names, acronyms, product spelling, and any publication-specific rules.
- Use Copy to place the finished text on your clipboard.
Useful Editing Scenarios
A case converter helps normalize all-caps text copied from a form, make spreadsheet headings consistent, prepare short interface labels, or clean up a draft assembled from several sources. It changes capitalization, not meaning or grammar, so names such as “iPhone,” acronyms such as “NASA,” and brand-specific spelling still require a human pass.
Language-Aware Casing
Case mapping is language-dependent. This English page uses the en-US locale. The paired Turkish page uses tr-TR so dotted and dotless i are handled according to Turkish rules. Choose the page that matches the language of your text when those characters matter.
Privacy and Local Processing
Standard browser text functions perform the conversion on this page. The tool does not use a third-party processing API or upload your text. For sensitive material, also consider local factors outside the tool itself, including clipboard history, browser extensions, screen sharing, and shared computers.
Give the Text a Final Check
Review the case styles in context, then check word and character totals when your destination has a length limit.
Frequently Asked Questions
Is my text sent to a server?
No. JavaScript on the page converts the text in your browser; the tool does not send it to a server for processing.
What is title case?
This converter capitalizes the first letter of every word and lowercases the rest. Review proper nouns and house style afterward.
What is sentence case?
It lowercases the text, then capitalizes the start and the first letter after sentence-ending punctuation or a line break.
Does it correct grammar or spelling?
No. It changes letter case only. Names, acronyms, spelling, and editorial style still need a final review.
Can I see word and character counts?
Basic totals are included. Use the separate Word & Character Counter for sentence, paragraph, and character-limit tracking.