Case Converter & Text Capitalization Tool
Convert text instantly between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and other casing styles client-side.
Transformation Styles & Conversions
Live Core Metrics
Word Count
0
Total number of words
Characters (with spaces)
0
Total string length
Characters (no spaces)
0
Excluding whitespaces
Line Count
0
Total number of lines
Sentence Count
0
Ended with . ! ?
Paragraph Count
0
Divided by empty lines
Reading Time
0s
Estimated at 225 WPM
Speaking Time
0s
Estimated at 140 WPM
Advanced Text Statistics
Unique Words
0
Deduplicated word set
Lexical Diversity
0%
Unique vs total ratio
Estimated Pages
0
Assumes 500 words/page
Estimated Size
0.00 KB
Total: 0 Bytes
Whitespaces
0
Tabs, spaces, newlines
Numbers Count
0
Numeric sequences
Punctuation
0
Marks & symbols
Longest Word
N/A
No words analyzed
Avg Word Length
0 chars
Total chars / total words
Avg Sentence Length
0 words
Words / total sentences
Character & Readability Insights
Uppercase Letters
0
Capital letters
Lowercase Letters
0
Small letters
Digits
0
Numeric characters
Symbols
0
Special symbols
Emojis Detected
0
Unicode pictographs
Avg. Chars / Word
0
Total chars / word
Avg. Chars / Sentence
0
Total chars / sentence
What is a Universal Case Converter?
Overview and core technical concepts
A Case Converter is a string manipulation tool that transforms text across naming conventions—including camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, UPPERCASE, and lowercase.
Why Convert String Cases?
Key advantages, developer speedups, and security benefits
Switch Variable Naming Conventions across Languages
Convert JSON `camelCase` keys to Python `snake_case`, C# `PascalCase`, or CSS `kebab-case` instantly.
Format Headlines & Titles
Convert draft article headlines into polished Title Case for blog publishing.
When Shouldn't You Use Case Converters?
Anti-patterns, limitations, and when to choose an alternative approach
Case-altering cryptographic hashes or Base64 strings corrupts the encoded data.
Case Conversion Matrix
Sample inputs, expected outputs, and code patterns
Converting 'user profile settings'
camelCase: userProfileSettings | snake_case: user_profile_settings | kebab-case: user-profile-settingsCommon Case Conversion Mistakes
Frequent errors, security risks, and how to fix them
Frequently Asked Questions
No. ToolZeno processes all case conversions client-side inside your web browser. Your text never leaves your local device, ensuring complete security and data privacy.
camelCase starts with a lowercase word and capitalizes subsequent words (e.g., myVariable). PascalCase capitalizes every word (e.g., MyClass). snake_case joins lowercase words with underscores (e.g., my_database_column). kebab-case joins lowercase words with hyphens (e.g., my-css-class).
Standard JavaScript casing defaults can fail with Turkish letters (e.g., capitalizing 'i' to 'I' instead of 'İ'). Our advanced settings let you select tr-TR or az-AZ locale, which instructs the engine to apply correct language-specific transformations locally.
Yes. By default, the Case Converter processes text line-by-line to keep line breaks intact. You can also toggle the 'Preserve multiple spaces' checkbox to prevent collapsing of multiple consecutive spaces.
You can drag & drop or upload plain text files (.txt) and markdown documents (.md) directly into the workspace. The file size limit is capped at 10MB.
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