Case Converter

Paste or type your text and instantly convert to UPPER, lower, Title, Sentence, or developer styles like camelCase, PascalCase, snake_case. Includes cleanup options and file upload.

Convert case

Client-side onlyFast & private

Preset

Custom separatorOverrides snake/kebab/constant/dot

Cleanup

Trim & collapse spaces

Trim ends and collapse multiple spaces/newlines.

Strip punctuation

Remove punctuation when building words.

Remove diacritics

Normalize accents (café → cafe).

Input

No text yet200000 chars left

Output

Sentence

Live preview (read-only). Click Swap to edit further.

Summary

Input length

0 chars

Output length

0 chars

Preset

Sentence

Tips

Use Swap to push the output back to input for chaining transforms.
Enable Trim & collapse spaces before developer styles for cleaner results.
Upload .txt or .md and download your converted text as a file.