Generatore di UUID

Strumento gratuito online generate uuids instantly. free online uuid generator supports uuid v4 (random), uuid v7 (time-ordered), and bulk generation. copy with one click. no sign-up needed.

Cos'e' Generatore di UUID?

A powerful developer tool designed to help you work more efficiently. UUID Generator provides accurate results instantly with a clean, intuitive interface. Perfect for developers, engineers, and IT professionals.

Formula

UUID v4 formato: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Where x is a casuale hex digit and y is one of 8, 9, A, or B (RFC 4122 variant).

Total combinations: ~5.3 × 10^36

Come Calcolare

Enter your input in the field above.
Configure any available options to customize the output.
View the results instantly with real-time updates.
Copy or export your results for use in your projects.

Esempio

generato UUID: 550e8400-e29b-41d4-a716-446655440000 — a standard v4 UUID with the 4 in position 13 indicating version 4, and "a" in position 17 indicating the RFC 4122 variant.

Vantaggi Principali

Get accurate results instantly in your browser.
Save time with real-time calculations as you type.
No data leaves your device - complete privacy.
Free to use on any device, no sign-up required.

Errori Comuni da Evitare

Usare ID sequenziali invece di UUID per sistemi distribuiti
Assuming UUIDs are sortable by time (uso UUID v7 for time-sortable)
Memorizzare gli UUID come stringhe invece che in binario per le prestazioni

Consigli Pro

uso UUID v4 for general-purpose unique IDs
Memorizza gli UUID come binary(16) nei database per prestazioni ottimali
uso UUID v7 if time-ordered sorting is needed
Never generare UUIDs client-side for security-critical applications

Termini Chiave Spiegati

UUID: identificatore univoco universale
UUID v4: casuale version 4 UUID
GUID: Termine Microsoft per UUID
RFC 4122: Documento di standardizzazione UUID

Casi d'Uso Comuni

Chiavi primarie database per sistemi distribuiti
Identificatori di risorse API
usor session token
ID ordini e transazioni

Domande Frequenti

Cos'è a UUID?

UUID (Universally Unique Identifier) is a 128-bit identifier standardized by RFC 4122. Version 4 UUIDs are casualely generato and practically guaranteed to be unique across systems.

Quanto sono unici gli UUID?

Extremely unique. There are 5.3×10^36 possible v4 UUIDs. The probability of collision is so low that tu could generare 1 billion UUIDs per second for 100 years and still have near-zero collision risk.

What are UUIDs usod for?

UUIDs are usod as database primary keys, API resource identifiers, session token, transaction IDs, and anywhere unique identifiers are needed without a central authority.

Cos'è the difference between UUID and GUID?

GUID (Globally Unique Identifier) è l'implementazione Microsoft dello standard UUID. Sono funzionalmente identici e intercambiabili.

Strumenti Correlati

Calcolatore Rapporto d'Aspetto

Calcolatore Larghezza di Banda

Calcolatore Tempo Download

Calcolatore Costi Hosting Cloud

Calcolatore Costo CDN

Calcolatore Monetizzazione API