Sentence Case Converter
Convert text to sentence case — capitalize only the first letter of each sentence. Perfect for fixing ALL CAPS text or reformatting titles and headings for APA style references.
When to Use Sentence Case
APA Reference Titles
APA 7th edition requires sentence case for article titles, book titles, and chapter titles in the reference list.
Body Text
Standard body text, paragraphs, and prose in all styles use sentence case by default.
Fixing ALL CAPS
Convert text that was accidentally typed in ALL CAPS back to readable sentence case with proper capitalization.
Frequently Asked Questions
- What is sentence case?
- Sentence case capitalizes only the first letter of the first word in a sentence and any proper nouns. Everything else is lowercase. For example, "The quick brown fox jumps over the lazy dog." is in sentence case. This is the default capitalization style for most body text.
- When should I use sentence case vs. title case?
- Use sentence case for body text, paragraphs, and APA-style reference list titles. Use title case for headings, book titles, and proper nouns. APA 7th edition uses sentence case for reference titles and title case for headings.
- Does the converter preserve acronyms and proper nouns?
- The tool recognizes common acronyms (like USA, NASA, HTML, PhD) and keeps them uppercase. It also preserves the capitalization of the letter "I" when used as a pronoun. However, it cannot automatically detect all proper nouns — review your output for names and places.
- Can I fix ALL CAPS text with this tool?
- Yes. Paste your ALL CAPS text and the converter will transform it into properly capitalized sentence case. The first word of each sentence will be capitalized, and the rest will be lowercase (except recognized acronyms). This is perfect for fixing text copied from documents, emails, or headings.