Convert text between different cases and formats instantly
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The CalcNest Case Converter transforms any text between multiple capitalisation styles instantly. Paste in your text and convert it to uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case, and more — no manual editing required.
Writers use it to fix accidentally capitalised text. Developers use it to convert between naming conventions. Content teams use it to standardise headings and titles. Whatever your use case, the converter gives you perfectly formatted output in one click.
All letters capitalised.
Example: THE QUICK BROWN FOX
All letters in lower case.
Example: the quick brown fox
First letter of each major word capitalised.
Example: The Quick Brown Fox Jumps
Only the first word of each sentence is capitalised, along with proper nouns.
Example: The quick brown fox jumps over the lazy dog.
First word lowercase, subsequent words capitalised, no spaces or separators.
Example: theQuickBrownFox
Every word starts with a capital letter, no spaces or separators.
Example: TheQuickBrownFox
All lowercase with words separated by underscores.
Example: the_quick_brown_fox
All lowercase with words separated by hyphens.
Example: the-quick-brown-fox
Title Case capitalises the first letter of major words in a title or heading. Generally, nouns, pronouns, verbs, adjectives, and adverbs are capitalised. Short prepositions (in, of, at, on), articles (a, an, the), and coordinating conjunctions (and, but, or) are usually kept lowercase unless they are the first or last word. Different style guides (AP, Chicago, APA) have slightly different rules.
In camelCase, the first word is entirely lowercase and subsequent words start with a capital (e.g. myVariableName). In PascalCase (also called UpperCamelCase), every word starts with a capital letter including the first (e.g. MyVariableName). camelCase is standard for JavaScript variables; PascalCase is standard for class and component names.
Yes. The converter works on any length of text — from a single word to multiple paragraphs. Simply paste your content and select the desired output format.
No. All text processing happens entirely in your browser. Nothing you type or paste is ever sent to our servers or retained after you close the page.
CSS class names conventionally use kebab-case (e.g. hero-section, nav-link, btn-primary). camelCase is used in JavaScript and cannot be used in HTML attributes directly without modification. Consistency within your project is more important than the specific format chosen.