What is sentence case?
Sentence case is the everyday capitalization style you use when writing normal prose: only the first letter of each sentence is capitalized, along with proper nouns, and everything else is lowercase. It contrasts with title case, where most words are capitalized, and with all-caps or all-lowercase text. Sentence case is the recommended style for body paragraphs, UI labels, bullet points, image captions, and — increasingly — for headings and titles in modern web and product writing, because it reads as friendlier and is easier to scan.
How this sentence case converter works
Paste any block of text and the converter lowercases the whole thing, then walks through it and capitalizes the first alphabetic character after every sentence-ending mark — a period, question mark or exclamation point. The very first letter of the text is always capitalized. The process is instant and happens entirely in your browser, so even long documents are converted privately with no upload.
When to use sentence case
- Cleaning ALL-CAPS text: turn a shouty email or a copied PDF heading back into readable prose.
- Fixing lowercase notes: capitalize quick notes that you typed without the Shift key.
- App and website copy: Apple, Google and most modern style guides prefer sentence case for buttons, menus and headings.
- Subtitles and captions: social platforms and accessibility guidelines favor sentence case for readability.
Sentence case vs. title case
| Style | Example | Best for |
|---|---|---|
| Sentence case | How to bake the perfect sourdough loaf | Body text, UI, modern headings |
| Title case | How to Bake the Perfect Sourdough Loaf | Book titles, formal headlines, citations |
FAQ
- Will it keep proper nouns capitalized?
- Automatic sentence case only knows about sentence boundaries, so names like "Paris" or "Sarah" that fall mid-sentence may need a manual capital. Always proofread names and acronyms after converting.
- Does it handle multiple sentences and line breaks?
- Yes. Every sentence that ends in a period, question mark or exclamation point starts a new capital letter, and line breaks are preserved.
- Is my text uploaded anywhere?
- No. The conversion runs locally in your browser; nothing leaves your device.