Sentence Case Converter
Convert any text to proper sentence case -- first letter of each sentence capitalized, rest lowercase.
How to Use This Tool
- Paste or type the text you want to reformat into the Sentence Case input area at the top of the page.
- The Sentence Case instantly transforms your text into the target case style as you type, with no button click required.
- Copy the converted result to your clipboard with one click and paste it wherever you need it.
Common Use Cases
- Editorial cleanup: Convert all-caps press releases or marketing copy into readable sentence case for publication.
- UI label normalization: Standardize button text and form labels to sentence case per Material Design or Apple HIG guidelines.
- Document formatting: Apply sentence case to bullet lists, headings, and captions for consistent documentation tone.
Frequently Asked Questions
When should I use sentence case in UI design?
Material Design and Apple's HIG both recommend sentence case for buttons, menu items, and labels. It reads as more conversational and friendly than Title Case, scans faster on mobile, and matches how users naturally write in apps and chat interfaces.
Does sentence case keep proper nouns capitalized?
The converter capitalizes the first word after each period, question mark, or exclamation mark. It does not auto-detect proper nouns, so manually re-capitalize names like "London" or "Apple" after conversion if needed.
What about headings with no terminal punctuation?
For a heading like "welcome to dashboard" the converter treats the whole string as one sentence and capitalizes only the first letter: "Welcome to dashboard". Punctuate or split your input into multiple sentences for finer-grained capitalization.