# Text Case Inverter

Invert text case - convert uppercase letters to lowercase and lowercase letters to uppercase

> Canonical page: https://elysiatools.com/en/tools/text-invert-case

- **Category:** Text Processing

- **Keywords:** text, case, invert, convert, uppercase, lowercase, transform, swap case

## Overview

The Text Case Inverter is a straightforward utility designed to instantly swap the casing of your text, converting all uppercase letters to lowercase and all lowercase letters to uppercase.

## Inputs

- **Text to Process** (textarea): Enter text to invert case... Example: Hello World!

## When to use

- Correcting text accidentally typed with Caps Lock enabled.
- Formatting specific identifiers or codes that require inverted casing.
- Quickly adjusting text styles for design or programming documentation.

## How it works

- Paste your text into the input area.
- The tool automatically detects and processes the characters.
- Copy the inverted text directly from the output field.

## Use cases

- Fixing accidental Caps Lock errors in emails or documents.
- Creating stylistic text variations for creative writing or social media.
- Standardizing variable naming conventions during software development.

## Frequently asked questions

### Does this tool change numbers or symbols?

No, the tool only affects alphabetical characters and leaves numbers, symbols, and whitespace unchanged.

### Is there a limit to how much text I can process?

You can process large blocks of text, though extremely long documents may perform better in smaller segments.

### Does this tool work with non-English characters?

The tool supports standard Latin alphabet casing; behavior with special accented characters may vary based on system encoding.

### Is my text saved on your servers?

No, all text processing happens locally in your browser for your privacy and security.

### Can I undo the inversion?

Yes, simply run the inverted text through the tool again to return it to its original casing.

## Related tools

- [Advanced Case Converter](https://elysiatools.com/en/tools/advanced-case-converter): Convert between CamelCase, snake_case, kebab-case, PascalCase, and other naming conventions
- [ASCII Art Generator](https://elysiatools.com/en/tools/ascii-art-generator): Convert text to ASCII art using various fonts and styles
- [Indented List to ASCII Tree](https://elysiatools.com/en/tools/ascii-tree-from-indented-list): Convert a 2-space / 4-space / Tab indented hierarchical list (Markdown bullets, -, *, 1. prefixes optional) into a copyable ASCII directory tree. Two styles: Unicode box-drawing (├──└──│) for GitHub/Discord and classic ASCII (|--\--|) for plain text. Toggles for full guide lines, trailing spaces, and bracketed leaf nodes like docs/\[api.md\].
- [Leet Speak Converter](https://elysiatools.com/en/tools/leet-speak-converter): Convert text to and from leet speak (1337). Encode with Basic, Full, or Caps styles, or decode leet back to plain text.
- [Line Ending Converter](https://elysiatools.com/en/tools/line-ending-converter): Convert text line endings between LF (Unix/macOS), CRLF (Windows), and CR (classic Mac). Normalizes mixed endings in one pass and reports the original breakdown.
- [Pangram Checker](https://elysiatools.com/en/tools/pangram-checker): Check if text is a pangram (contains every letter of the alphabet). Reports missing letters, used letters, and unique-letter count.
- [Pig Latin Converter](https://elysiatools.com/en/tools/pig-latin-converter): Convert English text to and from Pig Latin. Handles consonant clusters, vowel words, QU units, and capitalization.
- [Sentence Case Converter](https://elysiatools.com/en/tools/sentence-case-converter): Convert text to Sentence case: capitalize the first letter of each sentence and lowercase everything else. Auto-restores the standalone pronoun "I".

## Samples

- [Text Case Format Samples](https://elysiatools.com/en/samples/text-case-formats): Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more
- [Text with Emoji Samples](https://elysiatools.com/en/samples/text-with-emoji-samples): Mixed language text containing various Unicode emojis for testing emoji extraction
- [Chinese-English Mixed Text Samples](https://elysiatools.com/en/samples/text-chinese-english-mixed-samples): Sample text files with mixed Chinese and English content for testing automatic spacing tools
- [Text with Chinese Samples](https://elysiatools.com/en/samples/text-with-chinese-samples): Mixed language text containing Chinese characters for testing Chinese extraction