What is inverse case?

Inverse case (also called swap case or toggle case) flips each letter: Hello World becomes hELLO wORLD.

When would I use inverse case?

It's useful for fixing text that was accidentally typed with Caps Lock on, or for creative text effects.

No. Only alphabetic characters are affected. Numbers, spaces, and symbols pass through unchanged.

Case Converters

Flip the case of every character — uppercase becomes lowercase and vice versa.

100% client-side processing

100% client-side — your text never leaves your browser

Input

0 characters|0 words|0 lines

Output

0 characters|0 words|0 lines

Flip the case of every character — uppercase becomes lowercase and vice versa.. Runs 100% client-side — no data is sent to any server.

Vercel

Deploy frontend apps with zero config

Netlify

Build and deploy modern web projects

DigitalOcean

Cloud infrastructure for developers

Railway

Deploy apps, databases, and cron jobs instantly

UPPERCASE Converter

Convert any text to UPPERCASE letters instantly.

lowercase Converter

Convert any text to lowercase letters instantly.

Title Case Converter

Capitalize the first letter of each major word (skipping articles and prepositions).