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Text Case Converter FAQ — UPPERCASE, camelCase, snake_case & More
Answers about text case conversion: camelCase vs snake_case, naming conventions, title case rules, and how to convert text between formats.
Q1 How do I convert text case online?
Paste text into the Text Case Converter and click the desired format: UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, or CONSTANT_CASE.
Q2 What is camelCase?
camelCase starts lowercase, each subsequent word is capitalized:
myVariableName. Standard for JavaScript, Java, TypeScript variables and functions.
Q3 What is PascalCase?
PascalCase capitalizes every word including the first:
MyClassName. Standard for class names, React components, TypeScript interfaces.
Q4 What is snake_case?
snake_case uses lowercase with underscores:
my_variable_name. Standard in Python, Ruby, Rust, and database columns. SCREAMING_SNAKE_CASE for constants.
Q5 What is kebab-case?
kebab-case uses lowercase with hyphens:
my-component-name. Used for CSS classes, HTML attributes, URL slugs, npm packages.
Q6 When should I use camelCase vs snake_case?
Follow your language's convention: JavaScript/TypeScript: camelCase. Python/Ruby/Rust: snake_case. CSS: kebab-case. Consistency matters more than the specific convention.
Q7 What is Title Case?
Title Case capitalizes major words: "The Quick Brown Fox". Minor words (a, an, the, in, on) are lowercase unless starting the title. Use the converter for consistent formatting.
Q8 What is Sentence case?
Sentence case capitalizes only the first word and proper nouns. Used for headings in APA style, UI button text, form labels.
Q9 How do I convert camelCase to snake_case?
Use the Text Case Converter. In code: insert underscores before uppercase letters and lowercase everything.
Q10 How do I convert snake_case to camelCase?
In JavaScript:
str.replace(/_([a-z])/g, (_, c) => c.toUpperCase()). Python: split on underscore and capitalize.
Q11 What is CONSTANT_CASE?
All uppercase with underscores:
MAX_RETRY_COUNT. Universally used for constants and environment variables.
Q12 What naming convention does Python use?
PEP 8: snake_case for functions/variables, PascalCase for classes, UPPER_SNAKE_CASE for constants, _leading_underscore for private.
Q13 What naming convention does JavaScript use?
camelCase for variables/functions, PascalCase for classes/components, UPPER_SNAKE_CASE for constants, kebab-case for files/CSS.
Q14 How do I convert text to uppercase in JavaScript?
string.toUpperCase(). Lowercase: toLowerCase(). For locale-aware: toLocaleUpperCase('tr').
Q15 How do I convert text to uppercase in Python?
string.upper(). Lowercase: .lower(). Title: .title(). Capitalize: .capitalize(). Case-fold: .casefold() for comparison.
Q16 What is the difference between Title Case and Start Case?
Title Case follows grammar rules (minor words lowercase). Start Case capitalizes every word. Differs in phrases like "Lord of the Rings" (Title) vs "Lord Of The Rings" (Start).
Q17 How do CSS naming conventions work?
BEM:
.block__element--modifier. All use kebab-case. CSS custom properties: --primary-color.
Q18 How do I rename variables in my IDE?
VS Code: F2. IntelliJ: Shift+F6. This renames all references across files. Always prefer IDE rename over find-and-replace.
Q19 What is Hungarian notation?
Prefixes variable names with type indicators:
strName, intCount. Outdated in modern languages with strong type systems.
Q20 How do I enforce naming conventions?
Use linters: ESLint camelcase rule, Ruff for Python, RuboCop for Ruby. Configure in CI/CD to reject violations.
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