Change text case
Convert capitalization without touching punctuation, spacing, or line structure.
How to use change text case
Four case conversions with one guarantee: only letters change. Punctuation, digits, spacing, and line breaks pass through byte for byte, so the shape of the text cannot drift while its capitalisation is fixed.
- 1Paste the text with the wrong capitalisation
Caps-lock accidents, shouting headlines, ALL-CAPS exports, inconsistently cased titles — anything works, and the structure is preserved whichever mode you choose.
- 2Pick the target case
Sentence case capitalises the first letter after each sentence-ending mark and lowercases the rest. Title Case capitalises every word. UPPERCASE and lowercase do exactly what they say. The conversion applies to everything in the editor.
- 3Clean and proofread the proper nouns
Select Clean text, then skim for names. Mechanical conversion cannot know that "nasa" should be NASA or that "iPhone" keeps its lowercase i, so those need a human pass — the result panel is editable, so fix them in place before copying.
When this tool is useful
What each mode does mechanically
Sentence case lowercases everything first, then capitalises the first letter of the text and the first letter after each full stop, question mark, or exclamation mark followed by a space. That first step is worth knowing: existing capitals — acronyms, brand names, the pronoun "I" — are flattened before recapitalisation, so "NASA launched." comes out as "Nasa launched." and needs the acronym restored by hand.
Title Case capitalises the first letter of every word, including the short ones — "of", "and", "the" — that publishing styles usually leave lowercase. It is simple title case, matching what most headline fields expect; if your house style lowercases minor words, expect to lowercase a few by hand afterwards.
The uppercase and lowercase mappings cover the full alphabet including accented letters, so "école" becomes "ÉCOLE". And because only letters are ever mapped, text containing numbers, punctuation, or markup cannot be damaged — nothing else changes at all.
Change text case questions
No. Sentence case lowercases everything first and then recapitalises sentence starts, so acronyms and proper nouns come out flattened and need restoring by hand. That trade is what makes the conversion predictable on messy ALL-CAPS input.
No — it capitalises every word, including "of" and "the", which those styles leave lowercase. It matches what simple headline fields expect; adjust the minor words by hand where a style guide requires it.
A full stop, question mark, or exclamation mark followed by whitespace. Abbreviations like "e.g." look like sentence endings to that rule, so the letter after one may be wrongly capitalised and need a manual fix.
The conversion applies to the whole editor, so paste just the fragment you want converted. The result panel is also directly editable, which covers small spot corrections.
No. Every non-letter character — spaces, line breaks, digits, punctuation — passes through untouched. Only the case of letters changes.