Free Online Sentence Case Converter

Sentence case capitalises only the first letter of each sentence and proper nouns, leaving the rest lowercase — the standard for body text.

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How to Use This Text Tool

  1. Paste your text, even SHOUTING ALL CAPS, into the input field.
  2. The sentence-cased version appears in the output panel.
  3. Scan the result for proper nouns and acronyms that should stay capitalised.
  4. Click Copy to send the result to your clipboard.

What Is a Sentence Case Converter?

Headlines, marketing copy and SHOUTY ALL-CAPS strings often need to be flattened back into readable prose before they go into an article body, an alt attribute, a meta description or a database. Sentence case is also the modern UI convention for buttons and labels, where Title Case reads as shouty next to surrounding paragraph text.

The converter detects sentence boundaries at `.`, `?` and `!`, capitalises the first letter after each, and lowercases everything in between. It will not restore correct capitalisation for proper nouns — names, brands and acronyms need a manual scan after conversion.

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Frequently Asked Questions

What is sentence case?
Sentence case capitalizes only the first letter of each sentence and proper nouns. All other words are lowercase unless they're names or titles.
When to use sentence case vs title case?
Use sentence case for body text, meta descriptions, and UI labels. Use title case for headlines, book titles, and prominent headings.
How does it detect sentences?
Sentences are typically split by periods, question marks, and exclamation points. The first letter after each is capitalized.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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