How to use Case Converter
- Type or paste your text into the box above.
- Choose the options you need – the result updates instantly.
- Copy the result or download it as a .txt file.
How to convert case online
Paste your text into the box and click the case you want. The text changes instantly, and you can click Undo to go back or try another button. Change case as often as you like – this free letter case converter works with any language. Copy the result or download it as a .txt file when you are done.
Upper case converter and lower case converter
This case converter works as an uppercase converter and a lowercase converter in one. Click “UPPER CASE” to convert to uppercase, for example for headings and labels, or “lower case” to turn text typed in all caps back into small letters. To convert uppercase to lowercase but keep a capital at the start of each sentence, use “Sentence case”. Used as an uppercase to lowercase converter, it also fixes text typed with caps lock. It covers every uppercase conversion and lower case conversion – use it as a capital letter converter or to convert all caps to lowercase.
Which case should I use?
Sentence case starts each sentence with a capital letter, like normal writing. Title Case is used for headlines and book titles. Capitalized Case gives every word a capital first letter. Upper case works for short labels and warnings, and lower case is handy for tags and web addresses.
How does Title Case work?
Title Case capitalizes the important words. In English, short words such as “a”, “the”, “and”, “of” and “in” stay lowercase unless they come first or last, following the common style of newspapers and publishers.
Fix text typed with caps lock
Paste the text and click Sentence case. The sentence case converter gives every sentence a capital first letter and the rest becomes lowercase. Names and places need a quick check afterwards, because a case changer cannot know which words are names.
Private by design
Every tool runs inside your browser on your own device. Your text is never sent to a server, so it cannot be seen, stored or shared by anyone.
Frequently asked questions
How do I convert uppercase to lowercase?
Paste your text and click “lower case”. This upper case to lower case converter keeps nothing in capitals. To keep a capital at the start of each sentence, convert to sentence case instead.
How do I change text to all caps?
Paste your text and click “UPPER CASE”. Every letter becomes a capital letter – the same as an all caps converter.
What is the difference between Title Case and Capitalized Case?
Capitalized Case gives every word a capital first letter. Title Case leaves short words like “a”, “and” and “of” in lowercase, the way book and article titles are written.
Can I undo a change?
Yes. Click Undo above the text box to go back one step, or Redo to repeat it.
Is this case converter online free?
Yes. Every conversion is free, with no sign-up and no limit on the length of your text.
Is my text sent anywhere?
No. The case conversion happens instantly in your browser, and your text never leaves your device.