Text Case Converter

What This Tool Does

This converter can convert any piece of text and recapitalize it in any style you choose. It changes only the capitalization of the letter itself, and not the words, so content, punctuation, and spacing remain as written.

It supports two types of cases, addressing two different problems:

• Prose cases — for writing that is read: sentence case, Title Case, UPPERCASE, lowercase
• Programming cases - camelCase, PascalCase, snake_case, kebab-case, cases: codes that computer can read -

All the case formats (with examples)

Sentence Case vs. Title Case: The Rule People Get Wrong:

These two are most often mixed up and most tools use a shortcut that is not quite correct for either.

• Sentence case is when only the first letter of the sentence (and any proper nouns) are capitalized, just as in regular writing. A quick brown fox jumps.
• Title Case caps major words in a title, and normally leaves short function words—articles (a, an, the), coordinating conjunctions (and, but, or), and short prepositions (in, on, of, to) at the beginning or end of the title. Correctly (and imaginatively): The Quick Brown Fox Jumps Over the Lazy Dog — "the" and "over" are both capitalized because they are at the start of a new sentence and in the middle of a sentence that needs a capital letter.

The most common type of converter simply capitalizes each individual word, technically a Capitalized Case, not true Title Case. If you're looking for a converter that doesn't break the rules of these small-word exceptions, but instead capitalizes everything indiscriminately, then you want one that follows AP, Chicago, or APA style, but make sure you're following the same rules as the style guide you're using — some of the conventions differ between AP, Chicago, and APA (for instance, they disagree on which prepositions should be capitalized, and these vary in length: AP says four or more, Chicago says six or more, and APA says seven or more).

Programming Case Styles, Explained

When you're naming a variable, file, or URL, but not writing prose, the case convention is typically not a style decision, but rather a decision made by the language or platform you're using.

• camelCase: first word lowercase, each subsequent word capitalized (no separators in between words). Commonly used for variables and functions in JavaScript, Java and other languages.
• PascalCase: words begin with lower case characters, except for the first word, which starts with an uppercase letter, and no words are separated by dashes. Typical class/ component naming for most object oriented languages.
• snake_case: words separated by underscore all lowercase. Standard for Python, Ruby and most database column naming.
• kebab-case: Lowercase all words, with hyphens or dashes between them (also known as hyphen-case). Use this for URL slugs, and CSS class names, as hyphens aren't always URL-friendly and browsers/search engines treat hyphens as word separators.

You don't need to be consistent with the case convention used in a specific language to make your code not work, but it will certainly make it look inconsistent from the rest of the code in that ecosystem — which is a great way for a code reviewer to catch you.

Frequently Asked Questions