Convert Text to PascalCase

Converting Text to PascalCase

PascalCase (also called UpperCamelCase) joins multiple words together with no separators, capitalizing the first letter of every word — including the first. It is named after the Pascal programming language, which popularized this convention.

Basic Conversion

Input:  user profile card
Output: UserProfileCard

Input:  get-api-response
Output: GetApiResponse

Input:  max_retry_count
Output: MaxRetryCount

PascalCase vs. camelCase

The only difference is the first character:

PascalCase: UserProfile
camelCase:  userProfile

In most ecosystems, PascalCase is used for "types" (classes, interfaces, components) while camelCase is used for "instances" (variables, functions, methods).

Where PascalCase Is Used

// TypeScript / JavaScript — Classes and React components
class UserService { /* ... */ }
function UserProfileCard({ name }: Props) { /* ... */ }

// TypeScript — Interfaces and type aliases
interface UserResponse { id: number; name: string; }
type PaymentStatus = "pending" | "completed" | "failed";

// C# — Classes, methods, properties, namespaces
public class HttpClient { /* ... */ }
public string GetUserName() { /* ... */ }

// Go — Exported identifiers (public)
func GetUserByID(id int) (*User, error) { /* ... */ }
type DatabaseConfig struct { /* ... */ }

File Naming Conventions

In React projects, component files typically use PascalCase:

UserProfileCard.tsx
NavigationMenu.tsx
PaymentForm.tsx

This makes it easy to distinguish component files from utility files (which use camelCase or kebab-case).

Handling Acronyms

Like camelCase, there are two approaches to acronyms:

"HTTP response" → HttpResponse  (preferred)
"HTTP response" → HTTPResponse  (preserves acronym)

The first approach is recommended because it keeps word boundaries visually clear.

Conversion Algorithm

1. Split the input into words (by spaces, hyphens, underscores, or case transitions).
2. Lowercase each word entirely.
3. Capitalize the first character of each word.
4. Join all words together with no separator.

Edge Cases

• Single word: "hello" → "Hello".
• Already PascalCase: the input passes through unchanged.
• All uppercase: "HTTP CLIENT" → "HttpClient".
• Numbers: "form step 2" → "FormStep2".