PDFTechnician

Sentence case converter

Turn uppercase, lowercase, or mixed-case text into readable sentence case with one click.

Open Sentence Case Tool

What sentence case does

Sentence case lowercases the text, then capitalises the first letter after sentence-ending punctuation and line breaks.

When sentence case is useful

Use it when pasted copy arrives in ALL CAPS, random mixed case, or inconsistent title styling. It is helpful for meeting notes, email drafts, support replies, product descriptions, and rough text exported from spreadsheets or AI tools before you paste it somewhere customer-facing.

How to convert text

  1. Open the Text Cleaner.
  2. Paste your text.
  3. Click Sentence case.
  4. Review and copy the result.

What to check afterwards

Sentence case improves readability, but brand names, acronyms, and proper nouns may still need a quick manual check. If the source text is also messy, run Remove extra spaces or Remove line breaks before converting the case.

Best uses

It is useful for notes, email drafts, pasted headings, product descriptions, and text that arrived in all caps.

Privacy

Draft copy can contain client names, personal notes, or unpublished content. This converter works locally in your browser, so the text does not need to be uploaded to a server first.

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