Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case and Sentence case in one click.
Fix capitalization without retyping
Paste text and convert between UPPERCASE, lowercase, Title Case and Sentence case in one click. The classic use: a paragraph typed with caps lock on — convert to sentence case and it reads normally again, no retyping.
Which case to use where
Sentence case — body text, emails, most headings in modern style guides. Title Case — book and article titles, H1 headlines in traditional American style; major words capitalized, short connectors lowercase. UPPERCASE — acronyms, legal disclaimers, and sparingly for emphasis (it reads as shouting in messages). lowercase — usernames, email addresses, URLs, code identifiers and a certain brand of minimalist branding.
Title case is trickier than it looks
Proper title case keeps articles and short prepositions (a, an, the, of, in, on) lowercase unless they start the title — "The Lord of the Rings", not "The Lord Of The Rings". Different style guides (AP, Chicago, APA) disagree on the details, which is why doing it by hand across a list of 50 headlines invites inconsistency a converter avoids.
For developers and marketers
Pair this with our Slug Generator for URLs, and the Word Counter for length limits. Converting headline batches before publishing keeps a blog's style uniform — small thing, professional look.
Frequently asked questions
Can this fix text typed with caps lock on?
Yes — convert to sentence case and the text becomes normally capitalized, with the first letter of each sentence raised.
Does Title Case handle small words correctly?
Connector words like "of", "and" and "the" are kept lowercase mid-title following standard title-case conventions.
Will my formatting and line breaks survive?
Yes — only letter casing changes; spacing, punctuation and line breaks pass through untouched.
Is the text I paste stored anywhere?
No — conversion happens entirely in your browser and nothing is sent to a server.