Case Converter
Convert text to UPPERCASE, lowercase, Title Case or Sentence case instantly while keeping your paragraphs and line breaks intact.
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Convert text case online
A case converter changes the capitalisation of text without requiring you to retype it. Paste or type your text above, then choose UPPERCASE, lowercase, Title Case or Sentence case. The conversion changes letter case while retaining your existing paragraphs, line breaks, punctuation and spacing.
Use UPPERCASE when you need all letters in capitals, or lowercase to turn capitalised or mixed-case text into lower case. Title Case is useful for general headings and titles: it capitalises the main words while leaving common short articles, conjunctions and prepositions in lower case unless they appear at the beginning or end of a line. It is a general-purpose conversion rather than an implementation of a particular editorial style guide.
Sentence case converts text to lower case and then capitalises the beginning of ordinary sentences. This can help correct text that was typed in capitals or has inconsistent capitalisation, but it cannot reliably identify proper nouns, acronyms or specialised names once their original capitalisation has been lost.
Case conversion is useful for headings, documents, email, website copy and text copied from PDFs or other applications. Everything is processed locally in your browser: your text is not sent to TextCleaner or an external processing service, and no registration is required.
How it works
- Paste or type the text you want to convert into the input box.
- Choose UPPERCASE, lowercase, Title Case or Sentence case.
- Review the result, then copy it wherever you need it.
When to use this tool
- Text was accidentally typed in capital letters and needs to be changed to lower case.
- A heading or title needs consistent capitalisation.
- Copied text from a PDF or document has inconsistent letter case.
- You need to standardise text before using it in a document, email or website.
- Several sentences need consistent sentence-style capitalisation without changing their paragraph structure.
Common use cases
Convert all-capital text to lowercase for easier editing.
Change headings and titles to general-purpose Title Case.
Convert mixed or inconsistent text to Sentence case.
Prepare text copied from PDFs, documents or websites for reuse.
Standardise capitalisation for documents, email or website content.
Frequently asked questions
What is a case converter?
A case converter changes the capitalisation of text. This tool can convert text to UPPERCASE, lowercase, Title Case or Sentence case without changing its paragraph and line-break structure.
How do I convert text to lowercase?
Paste or type your text into the input box and choose lowercase. Capital letters will be converted to lower case while punctuation, spacing and line breaks remain in place.
How do I convert text to uppercase?
Paste or type your text into the input box and choose UPPERCASE. Alphabetic characters will be converted to capitals without otherwise reformatting the text.
What is the difference between Title Case and Sentence case?
Title Case capitalises the main words in headings or titles, while Sentence case capitalises the beginning of ordinary sentences and otherwise uses lower case. Neither mode can reliably restore proper nouns or acronyms after their original capitalisation has been lost.
Does the Case Converter upload or store my text?
No. Case conversion runs locally in your browser. Your entered text is not sent to TextCleaner or an external processing service.
Will case conversion change my line breaks or paragraphs?
No. The case conversions change letter capitalisation only and retain the existing whitespace, line breaks and paragraph structure.