For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /reference/string/pascalCase.md.
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    pascalCase es-toolkit

    Converts a string to pascal case.

    const converted = pascalCase(str);

    Usage

    pascalCase(str)

    Use pascalCase when you want to convert a string to pascal case. Pascal case is a naming convention where the first letter of each word is capitalized and words are joined without separators.

    import { pascalCase } from 'es-toolkit/string';

// Basic usage
pascalCase('pascalCase'); // 'PascalCase'
pascalCase('some whitespace'); // 'SomeWhitespace'

// Words connected with hyphens or underscores
pascalCase('hyphen-text'); // 'HyphenText'
pascalCase('snake_case'); // 'SnakeCase'

// Handling consecutive uppercase letters
pascalCase('HTTPRequest'); // 'HttpRequest'
pascalCase('XMLHttpRequest'); // 'XmlHttpRequest'

    It also correctly handles strings with various separators.

    import { pascalCase } from 'es-toolkit/string';

// Mixed separators
pascalCase('camelCase-with_mixed.separators'); // 'CamelCaseWithMixedSeparators'

// With numbers
pascalCase('version2.1.0'); // 'Version210'

// With special characters
pascalCase('[email protected]'); // 'UserEmailCom'

    Parameters

    strstringrequired

    The string to convert to pascal case.

    Returns

    Returns a new string converted to pascal case.

    string

    Try It

    ::: sandpack

    import { pascalCase } from 'es-toolkit/string';

console.log(pascalCase('pascalCase'));

    :::

    Source: es-toolkit

    Re-exported verbatim from es-toolkit. Implementation, edge cases, and performance behavior are owned upstream. This page mirrors the documentation at the pinned version; the linked source is authoritative.