Cómo usar: GUID Generator
- GUIDs are generated as soon as the page opens, in uppercase Microsoft format with braces.
- Set how many you need and the output format — list, comma-separated, JSON array or SQL values.
- Copy them, or switch off braces and uppercase for a plain UUID.
GUID vs UUID
A GUID (globally unique identifier) is Microsoft’s name for a UUID (universally unique identifier). Both are 128-bit values written as 32 hexadecimal digits in five groups, 8-4-4-4-12. Windows tools traditionally show GUIDs in uppercase and wrapped in braces — {6F9619FF-8B86-D011-B42D-00C04FC964FF} — while most other systems use lowercase without braces. The value is the same; only the notation differs.
Using GUIDs in .NET and SQL Server
In C#, Guid.NewGuid() creates a version 4 (random) GUID and Guid.Parse("…") accepts all the formats this tool produces. In SQL Server, GUID columns use the uniqueidentifier type; choose the SQL output to get quoted values ready for an INSERT. Version 7 GUIDs start with a timestamp, so new rows land at the end of an index instead of in random places — useful for primary keys.
Are GUIDs really unique?
Version 4 GUIDs contain 122 random bits from your browser’s cryptographic random generator. You would need to create about a billion GUIDs per second for around 85 years to reach a 50% chance of a single collision, so they are safe to treat as unique.
También se busca como: generate guid, guid online, new guid, random guid, c# guid, sql server guid, uniqueidentifier generator.
Herramientas que combinan con: GUID Generator
- UUID Generator — Create cryptographically random UUIDs (v4) or sortable, timestamp-based UUIDs (v7) in bulk, then copy or download them.
- Hash Generator — Compute MD5 and SHA hashes of any text or file instantly, create HMAC signatures, and paste an expected checksum to verify a download.
- Generador de contraseñas — Crea contraseñas seguras y verdaderamente aleatorias o frases de contraseña fáciles de escribir, con reglas avanzadas: incluye o excluye palabras, exige determinados caracteres, elige los símbolos permitidos, evita repeticiones y secuencias.
- Generador de números aleatorios — Genera números aleatorios (con o sin duplicados), elige ganadores de una lista, mezcla nombres, divide grupos en equipos, lanza monedas y tira los dados, todo ello utilizando el generador de números aleatorios criptográficamente seguro de tu navegador.
Preguntas frecuentes
What is the difference between a GUID and a UUID?
How do I generate a GUID in C#?
Guid.NewGuid(). To format it with braces, call .ToString("B").ToUpper().