Sentence Case Converter

Workflow & Usage

1. Paste your text Drop in a sentence, a messy headline, or a whole list.

2. Get Sentence case output instantly Live output updates as you type:

• HELLO WORLD → Hello world
• tHIS iS a TITLE → This is a title

3. Copy and use it Click Copy and paste into emails, notes, CMS fields, or anywhere you want “normal” casing.

Need more control (Title Case, Capitalize Words, Slug, etc.)? Use the full Text Transformer tool.

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What Sentence case Is Good For

Sentence case is the quickest “make this readable” fix — especially when you’re dealing with text that came from all-caps UI, exports, or inconsistent typing.

• Headlines and snippets (when you want a calmer look) Turn shouty titles into something that reads naturally.

• Meta descriptions and short blurbs Great for cleaning pasted text before you publish.

• Notes, comments, internal docs When you just want consistent casing without thinking.

• Lists copied from spreadsheets If every line is a “thing name” and you want them to look uniform.

Note: For proper book-style headings, you probably want Title Case (or Capitalize Words) instead.

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Examples

Common conversions

• HELLO WORLD → Hello world
• THIS IS A TITLE → This is a title
• api KEY v2 → Api key v2
• already fine. → Already fine.

With punctuation

• WELCOME!!! → Welcome!!!
• SALE: 50% OFF TODAY → Sale: 50% off today

Multi-line lists

Input:

FIRST ITEM
second ITEM
tHiRd item

Output:

First item
Second item
Third item

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Use Cases

• Content editing Normalize headings and snippets before publishing.

• Marketing ops Clean up copied text (campaign notes, labels, quick copy) so it looks consistent.

• Customer support Turn template text into something that reads more human.

• General cleanup When you have a wall of text in random casing and you just want it usable.

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Tips for Best Results

• Watch for acronyms Sentence case will lowercase everything after the first character, so API becomes api. If you need to preserve acronyms, do a quick pass after converting.

• Multiple sentences If your input contains multiple sentences, this converter doesn’t detect sentence boundaries. Consider converting line-by-line (Batch mode) or using a more specialized editor if you need perfect grammar casing.

• Use Title Case for headings Sentence case is great for short sentences and snippets. For UI headings, blog titles, or section names, Title Case often looks better.

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How It Works

• Simple casing rule The tool trims the input, then:

• uppercases the first character

• lowercases everything after it

• Batch-friendly In Batch by newline mode, each line is treated as its own item, so lists convert cleanly.

• Private and fast It’s plain string processing in your browser — no uploads, no tracking, no storage.