Capital Case Converter — Title, Sentence & Word Case
Paste or type any text and instantly convert it to title case (APA style), capitalised words, sentence case, upper case, lower case or alternating case — with a live word and character count.
Conversion style
How does this calculator work?
Title Case capitalises every word except minor articles, prepositions and conjunctions (APA style). Capitalised Words capitalises every word. Sentence case capitalises only sentence beginnings. Upper/lower case transforms uniformly. Paste your text and pick a style — the result appears instantly with word and character counts.
Formula
How this is calculated
Text-case conversion applies different capitalisation rules to each character or word in the input. Title case (APA style) capitalises the first letter of every word except short articles, prepositions and conjunctions (a, an, the, and, but, or, in, of, …) — unless they appear at the start of the sentence. Capitalised Words mode is simpler: it capitalises the very first letter of every word regardless of what it is. Sentence case capitalises only the first letter after a sentence-ending punctuation mark (. ! ?) and lowercases everything else. Upper case and lower case transform every letter uniformly. Alternating case flips the capitalisation of every character in sequence starting with lowercase.
The word count splits on whitespace (one or more spaces/tabs), the character count includes spaces and punctuation, and the sentence count counts terminal punctuation marks (. ! ?). These are approximate for short fragments but accurate for normal prose.
No text is sent to a server — all conversion happens in your browser.
Frequently asked questions
Capitalized Words capitalises the first letter of every single word — including short words like "a", "the", "in". Title Case follows APA/Chicago style and keeps minor words (articles, short prepositions, conjunctions) in lowercase unless they start or end the title.
Each mode applies independently. Title Case uses an internal list of ~20 minor English words. If you switch styles, the converter re-runs the appropriate rule from scratch on your original input.
Yes — paste as much text as you like. The converter processes the entire input field at once. Very long texts (thousands of words) still run instantly because all processing happens in your browser with no upload.
TG we-Calculate Editorial Team. (2026). Capital Case Converter — Title, Sentence & Word Case [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/capital-case-converter
TG we-Calculate Editorial Team. "Capital Case Converter — Title, Sentence & Word Case." TG we-Calculate. 2026. https://we-calculate.com/calculator/capital-case-converter.
TG we-Calculate Editorial Team, "Capital Case Converter — Title, Sentence & Word Case," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/capital-case-converter
@misc{wecalculate_capital_case_converter, title = {Capital Case Converter — Title, Sentence & Word Case}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/capital-case-converter}}, year = {2026}, note = {TG we-Calculate} }
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