UUID Without Hyphens
Paste one or more UUIDs and instantly get a clean 32-character identifier (no dashes). Supports UUIDs of any version.
UUID Without Hyphens
Powered byJavaScript & RFC 4122
All conversion happens locally in your browser. Nothing is sent to any server.
Paste UUIDs and click Convert to remove hyphens and format cleanly.
Why remove hyphens from UUIDs?
Many systems require compact identifiers or disallow special characters. Removing hyphens produces a 32-character string that remains valid and can be used in URLs, filenames, database keys, and integration fields.
Format
32 hex digits — no hyphens. Example: 550e8400e29b41d4a716446655440000.
Supported UUIDs
Any UUID version (v1–v7) is supported. The tool validates format and converts each line separately.
Use cases
Ideal for systems that need compact IDs, database keys, filenames, or any place where hyphens cause issues.
What is a UUID?
A UUID (Universally Unique Identifier), also known as a GUID (Globally Unique Identifier), is a 128-bit label standardized by the Internet Engineering Task Force under RFC 4122.
UUIDs are designed to be unique across all time and space without requiring a central registration authority. Two independently generated UUIDs can be assumed to be distinct, thanks to their extreme statistical uniqueness.
- 128 bits = 16 bytes of data
- Represented as 32 hex digits + 4 dashes (36 chars)
- Case-insensitive — upper or lowercase are equivalent
- Supported natively in PostgreSQL, MySQL, MongoDB, and more
UUID Format
32 bits
16 bits
16 bits
16 bits
48 bits
Removing hyphens produces a compact 32-character string suitable for storage or systems that do not allow dashes.
UUID Versions Compared
There are several UUID versions, each suited to different use cases.
| Version | Generation Method | Best For | Requires |
|---|---|---|---|
| v1 | MAC address + timestamp | Time-ordered logging — UUID v1 Generator → | Network interface |
| v2 | DCE Security (POSIX UID/GID) | Legacy DCE systems | System identity |
| v3 | MD5 hash of namespace+name | Deterministic IDs from names — UUID v3 Generator → | Namespace UUID + input |
| v4 | Cryptographically random | General purpose — most common — UUID v4 Generator → | Nothing (random) |
| v5 | SHA-1 hash of namespace+name | Deterministic IDs (secure) | Namespace UUID + input |
| v6 | Reordered timestamp (RFC 9562) | Sortable time-based IDs | Clock + node |
| v7 | Unix timestamp + random (RFC 9562) | Database-friendly sortable IDs | Nothing (modern standard) |
Example UUIDs
Click an example to convert it to a hyphen-free UUID.
How This UUID Converter Works
The tool validates the UUID format and then removes all hyphens (dashes) to produce a clean 32-character hexadecimal string.
It works for any UUID version and handles multiple UUIDs if pasted one per line.
Common Use Cases
This tool is useful when you need to:
Frequently Asked Questions
Concise answers about removing hyphens from UUIDs.
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