Free Sentence Case Converter – Auto-Format Any Text
Published 2026-01-14 · convertcase.in
Our sentence case converter intelligently capitalises the first letter of each sentence and properly handles the rest of the text — all in one click.
Try it now — free instant conversion
No signup · No limits · Works on all devices
1How It Works
The tool detects sentence boundaries (., !, ?) and capitalises the first word after each. It also preserves proper nouns when possible.
2Best Use Cases
Blog content, email body text, social media captions, app UI labels, and any long-form writing pasted from ALL CAPS or wrongly capitalised sources.
Frequently Asked Questions
Will sentence case fix proper nouns automatically?
Our tool capitalises sentence starts. For proper nouns mid-sentence (e.g. a name), review manually after conversion.