Case & naming
Capitalized Case converter
A capital case converter (proper case / cap case) that lifts the first letter of each word. Names, song titles, and simple headings — with optional proper-noun repair.
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A capital case converter, cap case converter, and proper case converter usually mean Capitalized Case (Start Case): This Is An Example Of Capitalized Case. Short prepositions get the same treatment as nouns.
That is not UPPER CASE (all capitals) and not Title Case (style-guide headlines). If you are writing a book title or a news headline, switch to the Title Case converter and pick AP, APA, Chicago, or MLA.
Last reviewed 2026-09-10.
FAQ
Questions, answered
How is this different from Title Case?
Capitalized Case uppercases every word, including short words like “of” and “the”. Title Case keeps those small words lowercase according to a style guide.
Is this a proper case converter?
Yes. Proper case, capital case, and cap case usually mean this Start Case transform — each word begins with a capital letter. It is not ALL CAPS.
Does it fix iPhone and NASA?
With smart casing on, yes. After capitalizing each word it overlays a dictionary of brands and acronyms.
Are hyphenated words handled?
Each whitespace-separated token is capitalized at the first letter. Use Title Case if you need hyphen rules from AP or Chicago.
When should I use this?
Form labels, playlist titles, and Start Case headings where every word should stand up.
Related
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Case & naming
Title Case
Title case converter with AP, APA, Chicago, and MLA small-word rules. Also an AP title case converter for headlines.
Case & naming
Sentence case
Sentence case converter: capitalize the first letter of each sentence and leave the rest lowercase.
Case & naming
UPPER CASE
Upper case converter: turn any text into capital letters. Also converts lower case to upper case, including German ß and Turkish i.