대소문자 변환기 — 무료 온라인 도구
텍스트를 대문자, 소문자, Title Case, camelCase 등으로 변환합니다.
- 브라우저에서 실행
- 즉시 결과 확인
- 100% 비공개
What Is a Case Converter?
A case converter rewrites text into a different capitalization style — UPPERCASE, lowercase, Title Case, Sentence case, or the programming-style camelCase, PascalCase, snake_case and kebab-case — without retyping a single word by hand.
Writers use it to fix accidentally-capslocked text or format headlines consistently; developers use it to convert a phrase into a valid variable or file name in the naming convention their language or framework expects.
누가 이 도구를 사용하나요?
비즈니스용
Standardize headline and title capitalization across marketing copy.
개인 사용
Fix text that was accidentally typed in all caps.
학생용
Format a paper's title consistently in Title Case.
사무실용
Convert a phrase into camelCase or snake_case for a spreadsheet column or variable name.
주요 기능
Eight Case Styles
Convert to UPPERCASE, lowercase, Title Case, Sentence case and four code-naming styles.
Instant Conversion
Output updates immediately as you type or change the case style.
100% Private
Your text is never uploaded or stored.
One-Click Copy
Copy the converted result straight to your clipboard.
이점
Saves Retyping
Convert case instantly instead of retyping text by hand.
Consistent Naming
Keep code identifiers and file names consistent with your project's conventions.
No Software Needed
Works entirely in the browser — no text editor plugin required.
대소문자 변환기 사용 방법
Paste Your Text
Add the text you want to convert.
Choose a Case Style
Pick from UPPERCASE, lowercase, Title Case and more.
Copy the Result
Use the Copy button to grab the converted text.
기술 세부 정보
| 항목 | 값 |
|---|---|
| 입력 | Plain text, pasted or typed directly |
| 처리 | No practical limit — handled entirely by your browser |
| 출력 | Exact, deterministic conversion for every case style |
개인정보 보호 및 보안
이 도구를 사용할 때 파일에 실제로 어떤 일이 일어나는지 알아보세요.
100% Client-Side
This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.
No Upload, Ever
There is no file upload and no server processing step — your data never leaves your device.
Works Offline
Once this page has loaded, the tool keeps working even without an internet connection.
Nothing Stored
Nothing you enter is saved on our servers — refreshing the page clears everything.
No Tracking of Your Input
We have no way to see what you type, generate or convert with this tool.
팁
Use camelCase for JavaScript Variables
camelCase is the conventional naming style for variables in JavaScript.
Use snake_case for Python and Databases
snake_case is the conventional naming style for Python variables and SQL columns.