Case Converter: The Ultimate Naming Convention Guide (2026)

Udit Sharma Jan 2, 2026 11 Min Read
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CASE CONVERTER - Complete Guide
CASE CONVERTER: Your complete guide to mastering this tool
Table of Contents

There are only two hard things in Computer Science: cache invalidation and naming things. And part of naming things is deciding HOW to write them. Should it be userId, user_id, or UserID?

These "casing conventions" aren't just about aesthetics; they are strict standards enforced by programming languages and communities. Mixing them up (e.g., using snake_case in Java) is a surefire way to look like a novice. This guide covers every major standard you need to know.

How to Convert Text Case - Simple 3-step workflow
How to Convert Text Case - Simple 3-step workflow
camelCase

Format: First letter lowercase, first letter of subsequent words uppercase. No spaces or separators.

Example (JavaScript)
const userProfileImage = "url";
function calculateTotalScore() { ... }

Where to use it:

snake_case

Format: All lowercase, words separated by underscores (_).

Example (Python)
user_profile_image = "url"
def calculate_total_score():
    return 100

Where to use it:

kebab-case

Format: All lowercase, words separated by hyphens (-). Also called "spinal-case" or "lisp-case".

Example (CSS & URLs)
.user-profile-card {
    background-color: #fff;
}
// https://example.com/blog/naming-conventions-guide

Where to use it:

PascalCase

Format: First letter uppercase, first letter of subsequent words uppercase. Like camelCase, but capitalized start.

Example (React/C#)
class UserProfile { ... }

// React Components MUST be PascalCase
const SubmitButton = () => <button>Go</button>;

Where to use it:

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Paste a list of variables or a paragraph. Convert between camel, snake, pascal, kebab, and title case with one click.

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SCREAMING_SNAKE_CASE

Format: All uppercase, words separated by underscores.

Example (Global Constants)
const MAX_RETRY_ATTEMPTS = 5;
const API_BASE_URL = "https://api.example.com";

Where to use it:

Frequently Asked Questions

How can I quickly switch case in VS Code? +
Highlight the text and use the "Transform to..." command in the Command Palette (Ctrl+Shift+P). Or better yet, install an extension like "change-case" to bind shortcuts like Alt+Shift+U for UPPER or Alt+Shift+C for camelCase.
Why does SQL use snake_case? +
Historical reasons. Older databases were case-insensitive (treating UserTable and usertable as the same). Underscores provided a reliable way to separate words without relying on capitalization.
What is Hungarian Notation? +
An old convention (mostly dead now) where you prefix the variable name with its type. Example: strName (String Name) or iCount (Integer Count). Modern IDEs show types on hover, making this redundant and cluttering.
Can I start a variable with a number? +
No. In almost all programming languages, variable names cannot start with a digit (e.g., 2user is invalid). They must start with a letter, underscore, or dollar sign (JS).
What about spaces in filenames? +
Avoid them like the plague. Spaces cause nightmares in command-line tools (requiring escaping like file\ name.txt) and URLs (becoming file%20name.txt). Always use kebab-case (web) or snake_case (data/scripts) for files.
Is Title Case used in coding? +
Rarely in code logic, but often in UI strings or comments. Title Case (Capitalizing Every Major Word) is standard for headlines, buttons ("Sign Up Now"), and menu items.
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