What exactly does Sentence case mean?

It capitalizes only the first letter of each sentence and lowercases the rest — like normal written English. Proper nouns must be re-capitalized manually if needed.

Does it handle question marks and exclamations?

Yes. Capitalization triggers after '.', '!' and '?' followed by a space.

Is it different from Title Case?

Yes. Title Case capitalizes every major word; Sentence case capitalizes only the first word of each sentence.

Is this safe for private documents?

Yes. Everything is processed locally in your browser and nothing is uploaded.

Case Converters

Sentence Case Converter

Turn messy ALL-CAPS or random-case copy into clean Sentence case. The first letter of each sentence is capitalized and the rest is lowercased, ready for articles, reports and product copy.

100% Client-Side — Your Data Never Leaves Your Browser

What is Sentence Case Converter – Capitalize Sentences?

Capitalize the first letter of each sentence automatically. Turn messy ALL-CAPS or random-case copy into clean Sentence case. The first letter of each sentence is capitalized and the rest is lowercased, ready for articles, reports and product copy. The tool runs 100% in your browser — nothing is uploaded to a server, so your data stays private, and it is free to use with no signup required.

Quick Answers

What exactly does Sentence case mean?: It capitalizes only the first letter of each sentence and lowercases the rest — like normal written English. Proper nouns must be re-capitalized manually if needed.
Does it handle question marks and exclamations?: Yes. Capitalization triggers after '.', '!' and '?' followed by a space.
Is it different from Title Case?: Yes. Title Case capitalizes every major word; Sentence case capitalizes only the first word of each sentence.

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Sentence case text

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How to use Sentence Case Converter – Capitalize Sentences

Paste or type your text into the input box.
Every sentence's first letter is capitalized instantly.
Copy the Sentence case result or download it as a file.

Why use our sentence case converter – capitalize sentences?

Sentence case is the standard for body copy, captions and most editorial writing: only the first letter of each sentence is capitalized. This converter lowercases your entire input, then capitalizes the first letter of the string and every letter that follows a period, exclamation mark or question mark. It is perfect for fixing text pasted in CAPS LOCK, normalizing product descriptions, and preparing clean copy for CMS fields. Processing is instant and 100% client-side.

Frequently Asked Questions

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