Convert Text to Sentence Case
Convert text to Sentence case — capitalize only the first letter of each sentence. Natural, readable formatting. Free tool.
Example: THIS IS A SENTENCE. AND ANOTHER ONE. → This is a sentence. And another one.
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About This Conversion
Sentence case capitalizes only the first letter of each sentence, producing the most natural and readable text format. This is the standard for body paragraphs, UI labels, meta descriptions, and conversational writing. The tool detects sentence boundaries (periods, exclamation marks, question marks) and capitalizes the following word while lowercasing everything else. This conversion is particularly useful for fixing ALL CAPS text or normalizing inconsistently formatted content from various sources.
Frequently Asked Questions
What is Sentence case?
Sentence case capitalizes only the first letter of each sentence and proper nouns, leaving everything else lowercase: 'This is how sentence case looks.' It's the most common format for body text.
How are sentence boundaries detected?
The tool splits text at periods (.), exclamation marks (!), and question marks (?), then capitalizes the first letter after each boundary. Line breaks can also trigger new sentences.
Will proper nouns be preserved?
The basic conversion lowercases everything except sentence starters. Proper nouns (names, places) will need manual correction as the tool cannot distinguish them from common words.