UUID 생성기 — 무료 온라인 도구
무작위 버전 4 UUID를 하나씩 또는 대량으로 생성합니다.
- 브라우저에서 실행
- 즉시 결과 확인
- 100% 비공개
What Is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit value, typically written as 32 hexadecimal digits in five groups (like 3f2504e0-4f89-11d3-9a0c-0305e82c3301), designed so that generating one independently, anywhere, is astronomically unlikely to collide with any other UUID ever generated.
Version 4 UUIDs — the kind this tool generates — are built from random bits, making them the simplest and most common way to create unique identifiers for database records, API resources, session tokens and file names without needing a central authority to hand them out.
누가 이 도구를 사용하나요?
비즈니스용
Generate unique identifiers for new database records or API resources.
개인 사용
Generate a unique ID for a personal project or file naming scheme.
학생용
Learn how UUIDs work for a databases or distributed systems course.
사무실용
Generate unique reference numbers for internal tracking.
주요 기능
Bulk Generation
Generate up to 100 UUIDs at once.
Format Options
Toggle hyphens and uppercase formatting.
Cryptographically Random
Uses your browser's Web Crypto API for true randomness.
100% Private
Generated entirely in your browser — nothing is transmitted.
이점
No Collisions in Practice
Random UUIDs are effectively guaranteed to be unique across systems.
No Central Authority Needed
Generate unique IDs independently, without coordinating with a server.
Generate in Bulk
Create many UUIDs at once for seeding test data.
UUID 생성기 사용 방법
Set Quantity & Format
Choose how many UUIDs and whether to include hyphens or uppercase.
Click Generate UUID
New random UUIDs appear instantly.
Copy the Result
Use the Copy button to grab all generated UUIDs.
기술 세부 정보
| 항목 | 값 |
|---|---|
| 입력 | Generated text output, no input required |
| 처리 | Up to 100 UUIDs per generation |
| 출력 | Version 4 (random) UUIDs using your browser's Web Crypto API |
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 as Primary Keys Carefully
UUIDs make great unique identifiers, though they take more storage than sequential integers.
Remove Hyphens for Compact Storage
Disable hyphens if a system expects a 32-character hex string without separators.