Free Case Converter Online

Transform Text Cases Instantly: Convert your text between multiple case formats including UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and more with just one click.

What is a Case Converter?

A Case Converter is a text formatting tool that transforms the capitalization of letters in your text according to different naming conventions and formatting standards. It’s an essential tool for developers, writers, content creators, and anyone who needs to quickly format text for specific purposes.

Understanding Text Case Types

Text case conversion involves changing how letters are capitalized in a string of text. Different case types serve different purposes in programming, writing, and content creation. Think of it as applying different “styling rules” to your text to match specific requirements or conventions.

What Cases Can You Convert?

UPPERCASE: Converts all letters to capital letters

• Example: “hello world” → “HELLO WORLD”

lowercase: Converts all letters to small letters

• Example: “HELLO WORLD” → “hello world”

Title Case: Capitalizes the first letter of each word

• Example: “hello world” → “Hello World”

Sentence case: Capitalizes only the first letter of the sentence

• Example: “hello world” → “Hello world”

camelCase: First word lowercase, subsequent words capitalized (no spaces)

• Example: “hello world” → “helloWorld”

PascalCase: All words capitalized with no spaces

• Example: “hello world” → “HelloWorld”

snake_case: All lowercase with underscores between words

• Example: “hello world” → “hello_world”

kebab-case: All lowercase with hyphens between words

• Example: “hello world” → “hello-world”

CONSTANT_CASE: All uppercase with underscores

• Example: “hello world” → “HELLO_WORLD”

Why Do We Use Case Converters?

Programming: Different programming languages and frameworks have specific naming conventions for variables, functions, and classes.

Content Creation: Format headings, titles, and text according to style guides and publishing standards.

SEO Optimization: Convert URLs and slugs to SEO-friendly formats like kebab-case.

Database Management: Standardize field names and data entries according to database conventions.

Documentation: Ensure consistent formatting across technical documentation and user guides.

Social Media: Format hashtags, usernames, and content according to platform requirements.

Key Points to Remember

• Case conversion preserves original text: Only capitalization changes, not the actual content
• Spacing may change: Some cases remove or replace spaces with special characters
• Reversible in most cases: You can usually convert back to the original format
• Context matters: Choose the right case format for your specific use case

How to Convert Text Cases

Step 1: Enter your text in the input text area.
Step 2: Choose your desired case format from the available options.
Step 3: Click the conversion button or the format will convert automatically.
Step 4: Copy and use your converted text.

Advanced Usage

Load External URL

Load external content directly in the browser URL:

https://www.uprek.com/en/tools/case-converter?url=external_url

Example:

https://www.uprek.com/en/tools/case-converter?url=https://www.example.com/sample-text.txt

Data as Parameter

Load data directly through the browser URL:

https://www.uprek.com/en/tools/case-converter?input=inputdata&case=camel

Example:

https://www.uprek.com/en/tools/case-converter?input=Hello%20World&case=snake

Available case parameters:

1. ?case=upper – UPPERCASE
2. ?case=lower – lowercase
3. ?case=title – Title Case
4. ?case=sentence – Sentence case
5. ?case=camel – camelCase
6. ?case=pascal – PascalCase
7. ?case=snake – snake_case
8. ?case=kebab – kebab-case
9. ?case=constant – CONSTANT_CASE

Common Use Cases for Developers

1. Variable Naming: Convert descriptions to proper variable names (camelCase, snake_case)
2. CSS Classes: Transform text to kebab-case for CSS class names
3. Database Fields: Convert to snake_case for database column names
4. Constants: Transform to CONSTANT_CASE for defining constants
5. File Names: Convert to appropriate naming conventions for different systems
6. API Endpoints: Format URLs and endpoint names consistently
7. JSON Keys: Standardize object property names in APIs

Use Cases by Profession

Developers:

• Converting user input to proper variable names
• Standardizing API response formats
• Creating consistent naming conventions

Content Writers:

• Formatting article titles and headings
• Converting text for different publishing platforms
• Creating SEO-friendly URLs and slugs

Social Media Managers:

• Formatting hashtags and campaign names
• Converting content for different platforms
• Creating consistent brand messaging

Data Analysts:

• Standardizing column names in datasets
• Converting data for import/export processes
• Cleaning and formatting text data

When to Use Different Cases

• camelCase: JavaScript variables, Java methods, mobile app development
• PascalCase: Class names, React components, C# properties
• snake_case: Python variables, database columns, Ruby methods
• kebab-case: CSS classes, HTML attributes, URL slugs
• UPPERCASE: Constants, environment variables, SQL keywords
• Title Case: Article headlines, book titles, proper nouns

Best Practices

1. Be Consistent: Stick to one naming convention within a project
2. Follow Language Conventions: Use the standard case for your programming language
3. Consider Readability: Choose cases that make your code or content easy to read
4. Platform Requirements: Some platforms have specific case requirements
5. SEO Considerations: Use kebab-case for URLs and slugs for better SEO

Technical Implementation

Our Case Converter handles:

• Unicode Support: Works with international characters and accents
• Special Characters: Preserves numbers and symbols appropriately
• Multiple Words: Intelligently identifies word boundaries
• Edge Cases: Handles abbreviations and mixed content correctly