UpperCase LowerCase Converter

Convert text between upper case, lower case, capitalized case, and sentence case instantly.

0 characters

Instant Conversion

Switch between different text cases instantly with a single click. No page reloads required.

Private & Secure

All processing is done in your browser. Your text never leaves your computer.

File Support

Drag and drop text files to quickly convert their content without opening them.

How to use the Case Converter?

Our Case Converter tool makes it easy to change the capitalization of your text. Whether you need to fix a "Caps Lock" accident or format titles for a blog post, we've got you covered.

  • UPPER CASE: Converts all letters into capital letters (e.g., "HELLO WORLD").
  • lower case: Converts all letters into small letters (e.g., "hello world").
  • Capitalized Case: Capitalizes the first letter of every word (e.g., "Hello World").
  • Sentence case: Capitalizes only the first letter of each sentence (e.g., "Hello world. This is a test.").

Why use our tool?

In orthography and typography, letter case is the distinction between the letters that are in larger upper case and smaller lower case. This tool helps you maintain consistency in your documents, social media posts, or code comments with minimal effort.