Convert text case instantly with this free online case converter. Change to UPPER, lower, Title, iNVERT, sPoNgE cAsE, etc., in one click. Perfect for editing documents, coding, or social media posts. No installation or sign-up required—quick, accurate case conversion for any text, saving you time and ensuring consistency.

Change Case

Case Options

UPPERCASE lowercase Title Case Sentence case iNVERT cASE sPoNgE cAsE

Input

Output

How to Use the Case Converter

Change Case Options:

Choose how you want to change the capitalization of your text:

UPPERCASE: Convert all letters to uppercase.
lowercase: Convert all letters to lowercase.
Title Case: Capitalize the first letter of each word.
Sentence case: Capitalize only the first letter of each sentence.
iNVERT cASE: Swap the case of each letter—convert uppercase letters to lowercase and lowercase letters to uppercase.
sPoNgE cAsE: Alternate between uppercase and lowercase letters in a playful style.

How to use:

Paste or type your text into the Input area.
Select the desired case transformation option above.
The converted text will instantly appear in the Output area.
Use the Copy button to copy the result, or Clear to reset your input and start over.

Tips:

The tool works with any amount of text—paragraphs, lists, or even single words.
Title Case and Sentence case follow standard English rules.
sPoNgE cAsE randomly alternates the case of each letter for a fun effect.