How to use this tool

1. Fill in the inputs.
2. Read the result.
3. Copy or download as needed.

About the Case Converter

The Case Converter instantly transforms any block of text into UPPERCASE, lowercase, Title Case, Sentence case, Capitalized Case, or tOGGLE cAsE (which flips the case of every individual letter). Paste your text, click the case you need, and copy the converted result with a single click.

This kind of formatting comes up constantly when preparing headlines, cleaning up text pasted from another source with inconsistent capitalization, or matching a specific style guide's capitalization rules without retyping everything by hand.

UPPERCASE and lowercase conversions use standard case-folding, converting every letter to its capital or small form respectively. Title Case capitalizes the first letter of every word while lowercasing the rest of each word — note that true editorial title case (which keeps certain short words like "a", "the", or "of" lowercase) follows more nuanced style-guide rules, so for professional headlines you may want to review the result against your specific style guide.

Sentence case capitalizes only the first letter of the text and the first letter following any sentence-ending punctuation (periods, question marks, exclamation marks), leaving the rest lowercase — this mimics normal sentence capitalization. Capitalized Case capitalizes the first letter of every word without altering the rest of each word's existing casing. Toggle case inverts the case of every single character: uppercase letters become lowercase and lowercase letters become uppercase.

Common use cases

• Formatting headlines and titles consistently across a document or website.
• Cleaning up text that was typed with the Caps Lock key accidentally left on.
• Standardizing capitalization in a list of names, product titles, or data pasted from a spreadsheet or another source.
• Quickly converting text to Sentence case after pasting from a source that used a different capitalization style.
• Creating a stylized "toggle case" effect for playful or emphasis-driven text.

Tips and best practices

• Title Case here capitalizes every word; if your style guide keeps small words like "and", "of", or "the" lowercase in titles, review and adjust the result manually.
• Sentence case is a fast way to fix text that was typed entirely in capitals — it will correctly re-capitalize just the start of each sentence.
• Toggle case is mainly useful for stylistic or decorative text rather than professional formatting, since it does not follow any standard grammar rules.
• Always proofread converted text before publishing, especially for Title Case, since automated capitalization cannot account for proper nouns or acronyms that may need special-case handling.

Frequently asked questions