ESTExact Size Tool
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Case Converter Free

Switch text between UPPERCASE, lowercase, Title Case, snake_case and more.

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Free, and staying free. No account, no daily limit, no watermark, nothing uploaded. Keeping it up does cost something (the domain, and the AI that reads your notification) and a contribution goes there. Passing the site to someone filling the same form helps just as much, and costs nothing at all.
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How to use it

  1. Type or paste your text.
  2. Set the options on the right. The result updates as you change them.
  3. Check the result, then press Download.

About Case Converter

Text arrives in the wrong case constantly: a name typed with caps lock on, a heading that needs title case, a label that needs to become a snake_case variable. Converting is instant here and saves retyping or fighting with a word processor.

Good to know

  • Title Case capitalises each word, which suits headings but not ordinary sentences.
  • snake_case and kebab-case are for file names, URLs and code identifiers.
  • Converting to uppercase and back does not restore the original capitals, so keep a copy.

Questions

What is the difference between Title Case and Sentence case?

Title Case capitalises most words; Sentence case capitalises only the first word and any proper nouns.

Can I undo a conversion?

Not once the original capitals are gone. Keep a copy before converting.

Does it handle Hindi or other scripts?

Scripts without upper and lower case are left unchanged, which is correct behaviour.

Is my text uploaded?

No. The conversion happens in your browser.

Is my file uploaded anywhere?

No. Everything runs inside your browser using your own device. Your file never leaves it, and we never see or store it. You can even disconnect from the internet and the tool still works.

Is it really free?

Yes. No account, no daily limit, no watermark on your files. The site is paid for by ads.

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