What is sentence case?

Sentence case capitalizes only the first letter of each sentence and proper nouns, similar to how you'd write normal prose.

Does it detect proper nouns?

Currently it capitalizes the first letter after sentence-ending punctuation (. ! ?). Proper noun detection requires NLP and is not included.

Use sentence case for body text, descriptions, and informal content where Title Case feels too formal.

Case Converters

Capitalize the first letter of each sentence.

100% client-side processing

100% client-side — your text never leaves your browser

Input

0 characters|0 words|0 lines

Output

0 characters|0 words|0 lines

Capitalize the first letter of each sentence.. Runs 100% client-side — no data is sent to any server.

Vercel

Deploy frontend apps with zero config

Netlify

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DigitalOcean

Cloud infrastructure for developers

Railway

Deploy apps, databases, and cron jobs instantly

UPPERCASE Converter

Convert any text to UPPERCASE letters instantly.

lowercase Converter

Convert any text to lowercase letters instantly.

Title Case Converter

Capitalize the first letter of each major word (skipping articles and prepositions).