Case Converter
Changes text to upper, lower, title, sentence, camel, snake or kebab case as you type.
Runs in your browser. The file or text you give it is not uploaded. Free, no account.
How it works
You pasted a heading in capitals, or a variable name that needs to be snake case, and you do not want to retype it. Paste the text once and pick a style: upper, lower, title, sentence, camel, snake or kebab among fourteen. The result changes as you type.
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Paste text and pick a style. Fourteen styles are available, including the ones programmers use.
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Title case follows the usual rule: small words such as "of" and "the" stay lower case unless they start the title.
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The result updates as you type and copies in one click.
What it does not do
Title case rules differ between style guides. This follows the common convention, not a specific manual.
When a source is busy or a site does not answer, this tool says so. It never fills the gap with a guess.
Questions
Which words stay lowercase in title case?
Title case keeps small words such as "of" and "the" in lower case unless they start the title. So "the end of the road" becomes "The End of the Road". The tool follows the common convention rather than a specific manual, so check your own style guide if you are writing to one.
What is the difference between sentence case and title case?
Sentence case capitalises the first word and leaves the rest in lower case, including proper names. It cannot identify names, so restore their capitals by hand. Title case capitalises the main words and keeps small ones such as "of" and "the" down unless they open the title. Both styles are available here, along with camel, snake and kebab case.
Why did my title case come out differently from my style guide?
Title case rules differ between style guides. Some capitalise every word, others keep prepositions and articles down, and some make exceptions for long prepositions. This tool follows the common convention: small words such as "of" and "the" stay lower case unless they start the title. If you write to a house manual, adjust the output by hand.