Tapez ou collez votre texte ci-dessous et convertissez-le en MAJUSCULES, minuscules, Casse Titre et plus — instantanément, dans votre navigateur.
100% dans votre navigateur • avec 100% de sécurité · ISO 27001 • Aucune donnée ne quitte votre appareil
Chaque catégorie a sa propre page dédiée avec des URLs propres.
Pick a style above and the change happens instantly. Here is exactly what each one does, with a worked example.
Capitalises the first letter of every sentence and lowercases the rest, so pasted text that arrived in ALL CAPS or mIxEd cAsE reads normally again. Sentence boundaries are detected after full stops, question marks and exclamation marks.
This is an example of sentence case.
Converts every character to lowercase. Handy for cleaning up shouty headlines, normalising email addresses and tags, or preparing text before you feed it into a slug or a database key.
this is an example of lower case.
Turns the whole selection into capital letters. Useful for headings, product codes, spreadsheet columns and anywhere a house style calls for uppercase without you retyping a word.
THIS IS AN EXAMPLE OF UPPER CASE.
Capitalises the first letter of every word and leaves the remaining letters untouched. It is the quickest way to tidy up names, menu labels and short headings where each word should start with a capital.
This Is An Example Of Capitalised Case.
Applies proper title styling: important words are capitalised while short joining words such as "an", "of" and "the" stay lowercase unless they open the title. This is the style most editors expect for articles and essays.
This Is an Example of Title Case.
Flips between lowercase and uppercase letter by letter, whatever case the text started in. Popular for playful captions and memes where the wobbling rhythm is the whole point.
tHiS Is aN ExAmPlE Of aLtErNaTiNg cAsE.
Swaps the case of every character: capitals become lowercase and lowercase becomes capital. It is the fastest fix for a line typed with Caps Lock on by mistake.
tHIS IS AN EXAMPLE OF INVERSE CASE.
People call this a case converter, a caps converter, a case changer or a letter case converter — it is all the same job: you have text in the wrong capitalisation and you want it fixed without retyping. Paste it above, pick a style, and copy the result. Nothing is uploaded and nothing is stored.
The common repairs are going from upper to lower case after a stray Caps Lock, turning a shouted paragraph back into sentence case, and switching a heading into proper title case before you publish it. Each of those has its own converter above, and each explains what it does and where it falls short.
Once your text is in the right case, the rest of the toolkit is a click away: count words and characters, strip formatting back to plain text, generate passwords and placeholder copy, convert units and number bases, and pull the words out of a picture with the image to text reader. Every one of them runs in your browser.
Aucune donnée ne quitte votre appareil.
avec 100% de sécurité · ISO 27001.