About Proper Case Converter
Built for writers, developers, students, and editors who value clean typography, 0ms speed, and uncompromising data privacy.
Our Mission: Fast, Clean, and 100% Private Text Formatting
At Proper Case Converter, our mission is simple: provide the most efficient, privacy-first, and beautifully designed text case conversion experience on the internet.
Whether you are a developer formatting database keys into camelCase or snake_case, a content creator standardizing headlines into Title Case, or someone who accidentally left Caps Lock on and needs to uncapitalize an email into Sentence case, Proper Case Converter gives you 13 specialized tools in one seamless interface.
Why We Built Proper Case Converter
For years, existing online case conversion tools have deteriorated into cluttered websites overwhelmed by intrusive pop-up advertisements, slow server roundtrips, tracking scripts, and unrelated calculators.
We believed professionals deserved better. We designed Proper Case Converter around four foundational pillars:
100% Client-Side Privacy
Your text is never sent across the internet. All transformations execute locally inside your browser memory. Safe for proprietary code, customer records, and confidential notes.
Instant 0ms Transformation
No spinning loaders or waiting for remote API responses. Conversions happen in 0 milliseconds with real-time word and character counts.
Developer & Editorial Grade
Precise support for AP / Chicago Title Case, intelligent Sentence case with proper noun handling, and complete programming cases (PascalCase, kebab-case, CONSTANT_CASE).
Fluid Mobile & Dark Mode
Designed from the ground up for iPhone, Android, tablets, and desktop workstations with instantaneous dark/light mode switching.
Built-In Productivity Features
- •Live Text Metrics: Real-time counts for characters, words, sentences, lines, and reading time.
- •Undo & Redo History: Test multiple casing styles freely with Ctrl+Z and Ctrl+Y support.
- •File Drag & Drop: Drag any .txt or .md file into the editor to convert text files instantly.
- •Multi-Case Live Comparison: Compare your text converted across all 13 formats side-by-side in real-time.
Get in Touch
We are constantly improving Proper Case Converter based on community feedback. If you have feature suggestions, bug reports, or partnership inquiries, feel free to contact us:
All 13 Text Case Conversion Tools
Each tool has a dedicated page with custom rules, live examples, and instant conversion capabilities.
Writing & Editorial Cases
Sentence Case Converter
Capitalize the first letter of each sentence automatically
lower case Converter
Convert all capital letters into lowercase instantly
UPPER CASE Converter
Convert all lowercase letters into uppercase capital letters
Title Case Converter
Capitalize headlines and book/article titles using standard style guides
Capitalized Case Converter
Capitalize the first letter of every single word
Developer & Programming Cases
camelCase Converter
Convert words into JavaScript and TypeScript camelCase format
PascalCase Converter
Convert text into PascalCase (UpperCamelCase) for classes and components
snake_case Converter
Convert words to lowercase separated by underscores
kebab-case Converter
Convert text into lowercase words joined by hyphens for URLs and CSS
dot.case Converter
Convert words to lowercase separated by dots for config keys and properties
CONSTANT_CASE Converter
Convert text to SCREAMING_SNAKE_CASE for constants and env variables