Case Converter
A case converter changes the capitalisation of text without retyping it. Paste your text into Toolvetta’s converter, choose lower case, UPPER CASE, Title Case, Sentence case or a code style such as camelCase, and copy the result. It updates as you type.
Runs in your browser. Your files and text are not uploaded.
How to change text case
- Type or paste your text into the left box.
- Choose a case, such as lower case, Title Case or snake_case.
- Copy the result or download it as a .txt file.
Case Converter: frequently asked questions
How do I change uppercase to lowercase?
Paste your text and choose lower case. Every letter becomes lowercase instantly, which fixes text that was typed with Caps Lock on.
How do I convert text to uppercase?
Paste your text and choose UPPER CASE. Letters with accents and other alphabets, such as é, ß and Cyrillic, are converted correctly too.
What is title case?
Title case capitalises the main words of a heading. Short words such as a, and, of and the stay lowercase unless they are the first or last word. Style guides such as AP and Chicago differ on some details, so check a title against your guide if it matters.
What is sentence case?
Sentence case capitalises only the first letter of each sentence, plus the word “I”. Names and acronyms become lowercase, so check those afterwards.
What are camelCase, snake_case and kebab-case?
Naming styles used in code: camelCase (firstName), PascalCase (FirstName), snake_case (first_name), kebab-case (first-name) and CONSTANT_CASE (FIRST_NAME). Developers may also like the JSON Formatter.
How do I change text case in Word, Excel or Google Docs?
In Word, select the text and press Shift+F3 to cycle cases. In Excel, use =LOWER(A1), =UPPER(A1) or =PROPER(A1). In Google Docs, use Format › Text › Capitalization.
Is it safe to paste private text into the case converter?
Yes. The conversion happens in your browser, and this page does not store or send your text. To count the words afterwards, use the Word Counter.
Built and tested by Zia Ur Rehman · Updated October 2026