Case Converter

Paste your text, tap a style, and copy the result. Handles everything from SCREAMING CAPS fixes to developer formats like camelCase and snake_case.

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Penman's AI can rewrite and reformat entire notes — not just their capitalization.

Frequently asked questions

What case styles are supported?

UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and inverted case.

Does Title Case handle small words correctly?

Yes — articles, conjunctions, and short prepositions (a, an, the, and, of, in…) stay lowercase unless they're first or last.

Instant word, character, sentence counts plus reading time and keyword density.

Deduplicate, sort, trim, and tidy messy pasted text.

A clean notepad that saves as you type and never leaves your device.