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Online Sentence Case Tool

The easiest way to fix text formatting. Capitalize sentences, convert to lowercase, or fix accidental CAPS LOCK instantly.

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Sentences
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Total Words
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Characters
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Paragraphs
Smart Capitalization
Instant Conversion
Privacy Protected

Why Use Our Sentence Case Converter?

Correct capitalization is essential for readability and professionalism. Whether you left the caps lock on by mistake or pasted text from a source that used all lowercase, our Capitalize First Letter of Sentences Tool fixes it instantly without you having to retype a single word.

Features Explained

Common Scenarios

This tool is particularly useful for:

Scenario Solution Result
Forgot Caps Lock Click "lower case" then "Sentence case" Normal readable text.
Chat Logs Click "Sentence case" Fixes "lazy" typing style.
Blog Titles Click "Capitalize Words" Instant headline formatting.
Why It Matters

Polished Writing

Automate the tedious parts of editing.

Productivity

Fix "Lazy" Typing Instantly

We all type quickly in chats or notes, often ignoring shift keys. When you need to turn those notes into a formal email or report, manually capitalizing every sentence takes time. This tool does it in milliseconds.

Auto-Fix

Detects . ! ? and new lines automatically.

One Click

Switch between styles instantly.

Accuracy

Preserve Proper Nouns

Unlike some simple converters that force everything to lowercase first, our "Sentence Case" logic focuses on lifting the first letter of sentences. This means if you have "New York" in the middle of a sentence, it stays "New York".

FAQ

Frequently Asked Questions

Yes. The tool treats new lines (paragraphs) as the start of a new sentence, so the first letter of each bullet point or list item will be capitalized.

Not always. If you convert "Apple" to "apple" (lowercase), the tool doesn't know it was originally a proper noun. You can use Undo (Ctrl+Z) in the text box immediately after conversion if you make a mistake.

Yes, absolutely. All processing happens in your browser using JavaScript. No data is sent to our servers.