Four cases
Switch between UPPER CASE, lower case, Title Case and Sentence case from one list.
🔠
Case Transformer
Switch text between UPPER, lower, Title, and Sentence case.
🔒 Enterprise privacy — 100% client-side, no server uploads
Start typing above and your result appears instantly.
What is Case Transformer?
Case Transformer is a free online tool that lets you switch text between UPPER, lower, Title, and Sentence case. It works in your web browser with no signup. Enter your text or numbers and see the result instantly. Everything you type stays in your browser.
Also searched as: uppercase to lowercase, text case converter, title case converter, sentence case converter.
Case Transformer at a glance
- Price
- Free, with no paid plans
- Account
- No signup or login needed
- Where it runs
- In your web browser
- Your data
- Nothing you type is sent to a server
- Works on
- Any modern browser, on desktop and mobile
- Category
- Clean Text & Structure Data
When to use Case Transformer
- →Fix text typed with caps lock on
- →Turn a headline into title case
- →Make a list all lowercase or UPPERCASE
How to use Case Transformer
- 1
Open Case Transformer and paste or type your text into the input box.
- 2
Your result updates instantly as you type — no button to click.
- 3
Adjust any mode or format options shown above the result, if the tool offers them.
- 4
Copy the output with one click, or leave it in place to keep editing.
Why use Case Transformer
- ✓Runs entirely in your browser — your file is never uploaded to a server.
- ✓No account, signup, or email address required to use it.
- ✓Completely free, with no daily limit and no signup.
- ✓Updates the result instantly as you type, so you can see changes in real time.
Case Transformer
Change text case in one click
Paste your text, pick UPPER, lower, Title or Sentence case, and the result appears instantly. No more retyping text that was typed with caps lock on.
Instant result
The converted text updates as you type or paste, with no button to press.
Sentence case that makes sense
Sentence case starts each sentence with a capital letter and lowercases the rest.
Your text stays private
Conversion happens in your browser. Your writing is not uploaded.
Any device
Fix a headline or caption on a phone, tablet or computer.
Free, no signup
No account and no limit on text length set by us.
Everything you need in Case Transformer
- UPPER CASE
- lower case
- Title Case
- Sentence case
- Instant results as you type
- Runs in your browser
- Works on phone and computer
- Free and no signup
Tips for better results
- 1
Check names and acronyms
Sentence case lowercases most words, so fix names and acronyms such as NASA or Ali afterwards.
- 2
Title Case is a simple rule
It capitalises the first letter of each word. Style guides that keep small words like of and the in lowercase may need a quick manual tweak.
- 3
Count after you edit
Use Word Counter to check the length of your finished text.
0files uploaded
0signups needed
0cost to use
Tutorials on Case Transformer
Short, practical guides that go with this tool.
🔒 Your privacy with Case Transformer
Case Transformer runs as client-side JavaScript inside your own browser tab. Your file or text is read, processed, and turned into a result on your device — it is never sent to, stored on, or seen by Toolkitties' servers. Closing or refreshing the page clears everything.
Frequently asked questions
How do I fix text typed in all capitals?
Paste it in and choose lower case or Sentence case. The result is shown straight away.
Which cases does the tool support?
UPPER CASE, lower case, Title Case and Sentence case.
What is Sentence case?
The first letter of each sentence is a capital and the rest of the text is lowercase.
Will it capitalise names correctly?
Sentence case lowercases most words, so names and acronyms may need to be fixed by hand afterwards.
Is my text uploaded?
No. The conversion happens in your browser.
Does it work with accented letters?
Yes. Letters such as é and ü are converted to the matching upper or lower case.
Is Case Transformer free to use?
Yes. Case Transformer is 100% free, with no signup, no daily limit and no paid plans.
Do I need to create an account to use Case Transformer?
No signup or login is required. Open the page and start using Case Transformer immediately.
Is it safe to use Case Transformer with private or sensitive files?
Yes. Case Transformer processes your file locally in your browser using client-side code. The file itself is never uploaded to Toolkitties' servers.
Does Case Transformer store the text I enter?
No. Your text is processed in memory in your browser tab and is cleared as soon as you close or refresh the page.