Case Converter
Convert text to uppercase, lowercase, title case, or sentence case.
● Processed locally in your browser unless the page says otherwise.
Note
How to use a case converter
This case converter changes text into uppercase, lowercase, title case, sentence case, and related formats. It is useful for headings, variables, tables, file names, English copy, and bulk text cleanup.
Different case styles fit different uses. Title Case is common for headings, lowercase works well for tags or URLs, and UPPERCASE is often used for codes, abbreviations, or emphasis.
Formula or logic
- UPPERCASE: convert all letters to capitals
- lowercase: convert all letters to lowercase
- Title Case: capitalize main words
- Sentence case: capitalize the start of a sentence
Example
If a title is written entirely in lowercase, convert it to Title Case. If you are cleaning tags or file names, lowercase may help keep naming consistent.
Common questions
Does Title Case match every style guide?
Not always. Style guides handle articles, prepositions, and conjunctions differently, so formal titles may still need review.
Will it change non-English text?
Usually only letters with case are affected. Chinese text generally stays the same.
Is it safe for large data cleanup?
Yes for quick formatting, but important data should still be spot-checked after conversion.