Case Converter — UPPER, lower, Title & More

Five case conversions in one click — UPPER, lower, Title, Sentence, and aLtErNaTiNg. Free, instant, no signup.

Type or paste text, then click a conversion button

How to Use

  1. Paste your text — Enter or paste the text you want to convert into the input area.
  2. Click a conversion button — Choose from UPPERCASE, lowercase, Title Case, Sentence case, or aLtErNaTiNg CaSe.
  3. Copy the result — Click copy to grab the converted text. Character and word counts are shown below the output.

Frequently Asked Questions

This tool offers five conversions: UPPERCASE (all caps), lowercase (no caps), Title Case (capitalize each word), Sentence case (capitalize first word of each sentence), and aLtErNaTiNg CaSe (alternating upper and lowercase). Each conversion applies instantly with one click.
aLtErNaTiNg CaSe is the "mocking" text style popularized by the SpongeBob meme. It's used for sarcasm, humor, and creative social media posts. Each character alternates between uppercase and lowercase, making the text look deliberately chaotic.
Yes — the case converter supports any language with uppercase and lowercase variants, including Latin, Cyrillic, and Greek scripts. Languages without case distinctions (like Chinese, Japanese, Arabic) will pass through unchanged since they don't have uppercase or lowercase forms.
Title Case capitalizes the first letter of every word ("The Quick Brown Fox"), while Sentence case only capitalizes the first letter after a period or at the start ("The quick brown fox"). Title Case is standard for headlines and titles, while Sentence case matches normal paragraph writing.

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