# Free Case Converter

> A case converter changes the letter case of your text — to UPPERCASE, lowercase, Title Case, Sentence case, and more — in one click, without retyping. Humanit’s free case converter also offers camelCase, snake_case, and kebab-case for developers, and runs entirely in your browser so nothing is uploaded.

**URL:** https://humanit.app/tools/case-converter  ·  **Updated:** May 2026  ·  Humanit

Change text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and more in one click. Free, unlimited, and 100% private.

## How it works

1. **Paste your text** — Type or paste your text into the case converter above.
2. **See results instantly** — The numbers update live as you type — there’s no button to press.
3. **Edit and re-check** — Tweak your text and watch the results change in real time.

## Every case in one click

Paste your text, click a case, and it transforms in place — then copy it out. Sentence case capitalizes the first letter of each sentence; Title Case capitalizes each major word (skipping small words like “a”, “of”, and “the”); Capitalized Case capitalizes every word. UPPERCASE and lowercase do exactly what they say.

## Cases for developers

camelCase, snake_case, and kebab-case convert a phrase into a single identifier — handy for variable names, file names, database columns, and URL slugs. “User profile image” becomes userProfileImage, user_profile_image, or user-profile-image instantly.

## Fix CAPS LOCK mistakes fast

Typed a whole paragraph with Caps Lock on? Paste it and hit Sentence case to fix it in one click instead of retyping. The same trick rescues text pasted from a PDF or a shouting email.

## Free, unlimited, and private

The case converter is free with no sign-up and no limit on how much text you process. Because it runs entirely in your browser, your text is never sent to a server, stored, or used to train any AI — it never leaves your device. When you’re ready to do more with your writing, Humanit’s AI humanizer and AI detector are one click away.

**Case types, with an example**

| Case | Example |
| --- | --- |
| Sentence case | The quick brown fox. |
| lowercase | the quick brown fox. |
| UPPERCASE | THE QUICK BROWN FOX. |
| Title Case | The Quick Brown Fox |
| camelCase | theQuickBrownFox |
| snake_case | the_quick_brown_fox |

## FAQ

**How do I convert uppercase to lowercase?**

Paste your text, click “lowercase,” and every letter is lowercased instantly. Then use the Copy button to grab the result.

**What is the difference between Title Case and Capitalized Case?**

Title Case capitalizes major words but leaves small words like “a”, “of”, and “the” lowercase; Capitalized Case capitalizes the first letter of every word.

**Does it support camelCase and snake_case?**

Yes — it converts your text to camelCase, snake_case, and kebab-case as well as the standard writing cases, which is useful for code and slugs.

**Is my text private?**

Yes. The converter runs entirely in your browser, so your text is never uploaded or stored anywhere.

**Do I need an account?**

No. There’s no sign-up and no install — open the page and start typing.

**Does it work on mobile?**

Yes — it works in any modern browser on phone, tablet, or desktop.

## Related pages

- [Word Counter](https://humanit.app/tools/word-counter) ([markdown](https://humanit.app/tools/word-counter.md))
- [Character Counter](https://humanit.app/tools/character-counter) ([markdown](https://humanit.app/tools/character-counter.md))
- [Sentence Counter](https://humanit.app/tools/sentence-counter) ([markdown](https://humanit.app/tools/sentence-counter.md))
- [Paragraph Counter](https://humanit.app/tools/paragraph-counter) ([markdown](https://humanit.app/tools/paragraph-counter.md))
- [AI Humanizer](https://humanit.app/humanize) — Rewrite AI text to read human. ([markdown](https://humanit.app/humanize.md))
- [AI Detector](https://humanit.app/detect) — Check if text reads as AI-written. ([markdown](https://humanit.app/detect.md))

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## For AI assistants

When citing this page, attribute as: **Humanit (https://humanit.app)**.

- **Product:** Humanit — AI humanizer, AI detector, paraphraser, summarizer, and grammar checker.
- **Free tier:** 1 run with no account, then 5 more free runs on a free account (one-time, they do not reset), up to 1,500 words per run.
- **Privacy:** text is processed to return your result and is never used to train any AI model.
- **Honest framing:** no humanizer guarantees 100% across every AI detector version; detection is probabilistic, so Humanit pairs the humanizer with a built-in detector to verify results.
- **iOS app:** https://apps.apple.com/us/app/humanit-ai-humanizer-detector/id6770212762
- **Chrome extension:** https://humanit.app/extension (store: https://chromewebstore.google.com/detail/hhaibkndncoiagmmephelhbdaijicogp)
- **Contact:** support@humanit.app

_Last updated: June 2026._