Online Case Converter Tools

There are many free online tools with a simple interface which were developed to help us to convert text to uppercase, lowercase or sentence case with a few clicks. Some tools support even more specific settings, like random, pascal, alternating, or title case. The PascalCase, hyphen-case and the snake_case converters help us generate file names instantly.


There are countless free online case converters out there which has a large text area where we can add our text and a list of buttons where we can select what kind of conversion we want to execute. Most of the converters throws the result in the same editor where we added the text. Let’s compare the best tools which help us set the capitalisatoin the most easily.

HTML Cleaner’s Case Converter

HTML Cleaner is a very useful tool to clean the dirty HTML markup and the website has got its own online case converter, where the user can choose from 9 capitalisation modes. The site is using the classic layout with the big text box and the button list below. The tool has Undo feture which we can use in case we’re not happy with the result. This is probably the best tool on this list for capitalizing a document because it’s focusing on this task and it’s not listing any other useless features.

Case Convert

This site has an oldish design on a narrow user interface. We can insert our text in a box and we get the converted document below, which doesn’t let our original version be lost. The site has a “Find and replace” tool, but the fact that we have to activate the preferred option on a small checkbox, and then push the convert button reduces the usability.


Paste your text document into the top text area, select one or more text conversion methods in the left pane then click on the “Convert” button located at the bottom. The page will open a second text area, containing the converted text.
The site comes with some extras, like the replace text function which supports regular expressions, text sorting, remove lines and spaces, etc. The too many options might become distracting.

Convert For Free

This site is the simplest from the list. It’s basically a text box and a convert button which transforms the input text to all capitals. There’s no other option on this website.


Use this tool if you accidentally left the Caps Lock on and typed something, but can’t be bothered to start again and retype it all. Simply paste your text and choose the case you want to convert it to: Upper, lower, proper or sentence. We can also save the result into a text file.

Online Case Converter

This online tool allows you to convert your text from UPPERCASE to lowercase, lowercase to UPPERCASE, capitalize words in sentences. Definitely a useful feature of a secure password generator website.

Letter Case Converter

Enter text and click a letter case conversion function button. We can also load the text form a file and save the results to one.

Title Case

TitleCase converter comes with a very clean and nice design where we can choose from a dark or light theme. The pulsating Setting button is attracting our attention, but the fact that the result is opening in a very small, unresizable window which lets us preview the result only if we scroll makes this tool hardly to use. The page refreshes every time we swich the conversion option and this empties the input area.

Text Case Converter

With the text case converter you can change the case of any text easily. The bad news is there are only four converoins options available.

Convert Case

This site has exactly the same intro text as, but this one has got AlTeRnAtInG cAse option and the possibility to download the text as .txt. The copy to clipboard button would make our life easier but the fact that we have to close a popup box saying the copy was successfull probably just makes our life harder.

Please note that the thrid-party websites listed above are not controlled by us and functionalities might have changed since we reviewed them.