The four cases and when to use them
- UPPERCASE: headings on posters, reference codes, shouting sparingly. Hard to read at length, so use it for short strings only.
- lowercase: resetting text before applying another case, informal branding, code identifiers.
- Title Case: headlines, book and film titles, navigation labels. (Hopi itself uses sentence case for headings, which is increasingly the modern UK convention.)
- Sentence case: everything else. Normal prose, capitalised at the start of each sentence.
Worked example
Two honest caveats
Names lose their capitals in sentence case. The converter cannot know that "london" is a place, so proper nouns need a quick manual fix afterwards. Title case capitalises every word, including a, the and of; most newspaper style guides lowercase those small words, so adjust to taste. Both behaviours are deliberate: predictable output you correct once beats clever output you cannot trust.
Frequently asked questions
What is the difference between title case and sentence case?
Title Case Capitalises Each Word, and is used for headlines and titles. Sentence case capitalises only the first word of each sentence (plus anything you have capitalised yourself elsewhere is reset), and is how normal prose is written.
Should small words be capitalised in title case?
Most style guides lowercase short words like a, an, the, of and in unless they start the title, but the rules differ between guides. This tool capitalises every word for predictability; lowercase the small words afterwards if your style guide wants that.
Will sentence case fix names and places?
No. Converting to sentence case lowercases everything after the first letter of each sentence, including proper nouns like London or Sarah, because the tool cannot know which words are names. Skim the result and restore capitals where needed.
Why does my pasted text arrive in capitals in the first place?
Usually because it was typed with caps lock on, exported from an old system that stores everything uppercase, or copied from a heading. Converting to sentence case and then fixing names is far faster than retyping.
Is my text uploaded anywhere?
No. The conversion happens in your browser and the text never leaves your device.