Quick answer
Change text to UPPER CASE, lower case, Title Case or Sentence case — or camelCase, snake_case and kebab-case for code — and clean up extra spaces. House of Convert's Case Converter is free, needs no sign-up, and nothing you paste is stored.
About the Case Converter
This free case converter changes the capitalization of any text as you type. Switch to UPPER CASE, lower case, Title Case or Sentence case for writing, or to camelCase, PascalCase, snake_case and kebab-case for code — and tidy up extra spaces at the same time.
Typed a paragraph with Caps Lock on, or pasted a heading that needs proper title capitalization? Paste the text, pick a case and copy the result. Title Case keeps short words such as “and”, “of” and “the” in lower case, the way style guides write headlines. Programmer cases split words on spaces, punctuation and existing camelCase humps, so “User ID number” becomes userIdNumber, user_id_number or user-id-number. Everything runs in your browser.
Popular Ways to Use the Case Converter
Fix text typed with Caps Lock on
Choose Sentence case or lower case.
Capitalize a headline
Title Case capitalizes the main words and keeps “a”, “of” and “the” small.
Make an ALL CAPS heading
Choose UPPER CASE.
Name variables and files
camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE.
Clean up pasted text
Tick “Remove extra spaces” to collapse double spaces and blank lines.
Frequently Asked Questions
How do I change text from uppercase to lowercase?
Paste the text and choose “lower case” — every letter becomes small. Choose Sentence case instead if you want the first letter of each sentence kept as a capital.
What is title case?
Title case capitalizes the first letter of the main words in a title — nouns, verbs, adjectives — while short words such as “a”, “and”, “of”, “the” and “to” stay lower case unless they start the title. Example: “The Lord of the Rings”.
What is sentence case?
Sentence case capitalizes only the first word of each sentence (and proper nouns), like normal prose: “How to convert units quickly.” Many websites and style guides now use it for headings.
What is the difference between title case and capitalize each word?
Capitalize Each Word puts a capital on every word, including “and”, “of” and “the”. Title Case follows headline style and keeps those short words lower case.
How do I convert text to camelCase?
Choose camelCase: words are joined with no spaces, the first word is lower case and each later word starts with a capital, as in “totalPrice”. PascalCase is the same but starts with a capital: “TotalPrice”.
What is snake_case and kebab-case?
snake_case joins lower-case words with underscores (user_name), common in Python and databases. kebab-case joins them with hyphens (user-name), common in URLs and CSS class names.
How do I undo Caps Lock text?
Paste the text and choose Sentence case — “tHIS IS MY TEXT” becomes “This is my text”. Inverse case simply swaps every letter’s case.
Does the case converter work with accented and non-English letters?
Yes. It uses Unicode letter rules, so é, ü, ß, Greek and Cyrillic letters change case correctly.
Can I remove extra spaces at the same time?
Yes — tick “Remove extra spaces and blank lines” to collapse runs of spaces into one, trim each line and drop empty lines.
Is my text sent to a server?
No. The conversion happens in your browser as you type, so your text never leaves your device.
