Convert case

Convert UPPER CASE to lower case and more.

This tool helps you convert UPPER CASE to lower case, to Sentence case, to Title Case, to aLtErNaTiNg cAsE, to iNVERSE CASE to Capitalized Case. This website is designed to allow you to convert blocks of text into any case, which you can then export to a text file or simply copy and paste back to your own document.

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Letter case

Letter case (or just case) is the distinction between the letters that are in larger upper case (also uppercase, capital letters, capitals, caps, large letters, or more formally majuscule) and smaller lower case (also lowercase, small letters, or more formally minuscule) in the written representation of certain languages. The writing systems that distinguish between the upper and lower case have two parallel sets of letters, with each letter in one set usually having an equivalent in the other set. The two case variants are alternative representations of the same letter: they have the same name and pronunciation and are treated identically when sorting in alphabetical order.

Letter case is generally applied in a mixed-case fashion, with both upper- and lower-case letters appearing in a given piece of text. The choice of case is often prescribed by the grammar of a language or by the conventions of a particular discipline. In orthography, the upper case is primarily reserved for special purposes, such as the first letter of a sentence or of a proper noun, which makes the lower case the more common variant in regular text. In some contexts, it is conventional to use one case only. For example, engineering design drawings are typically labelled entirely in upper-case letters, which are easier to distinguish than the lower case, especially when space restrictions require that the lettering be small. In mathematics, on the other hand, letter case may indicate the relationship between objects, with upper-case letters often representing "superior" objects (e.g. X could be a set containing the generic member x).

lower case

All letters in a sentence lower cased. The minuscule or small letters (a, b, c, as opposed to the uppercase or capital letters, A, B, C). The ordinary small form in which letters are written or printed. Big letters like those at the beginning of a sentence or name are called upper case or capital letters

this is an example of lower case in use.


Capitalization of all letters in a sentence. The majuscule or big letters (A, B, C as opposed to the lowercase or small letters, a, b, c). One of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis.


Sentence case

Capitalization of only the first word, proper nouns and as dictated by other specific English rules.

This is an example of sentence case in use.

Title Case

Capitalization of the first word, and all other words, except for articles, prepositions, and conjunctions.

This is an Example of Title Case in Use.


Capitalization of the words that normally are lowered and lower case of the words that normally are in capital. This converter will inverse all the letters to the opposite of what you have.


aLtErNaTiNg cAsE

Lower case of what would normally be a capital, first letter, in a sentence. The following letter will then always be the opposite case of the previous letter.

tHiS Is aN ExAmPlE Of aLtErNaTiNg cAsE In uSe.

Capitalized Case

Capitalized Case is writing a word with its first letter as a capital letter (uppercase letter) and the remaining letters in lower case, in writing systems with a case distinction.

This Is An Example Of Capitalized Case In Use.