UUID Generator
Generate random UUIDs (v4) for use in your applications.
UUIDs are generated using crypto.randomUUID() (v4) β cryptographically random, generated entirely in your browser.
UUID Generator creates universally unique identifiers (UUIDs) in the standard 8-4-4-4-12 hexadecimal format. A UUID is a 128-bit value designed to be unique across space and time without requiring a central authority β making it ideal for database primary keys, session tokens, request tracking IDs, and distributed system identifiers.
Click Generate to produce a new random UUID v4, or generate a batch of UUIDs at once for bulk operations. Each UUID is displayed ready to copy with a single click. The tool also supports UUID v1 (time-based) if your use case requires a timestamp component embedded in the identifier.
UUID v4 values are generated using cryptographically secure random numbers in the browser, meaning no two UUIDs from any source in the world should ever collide. This makes them a safe default for virtually any application that needs unique identifiers without coordination.
Frequently Asked Questions
Code Implementation
import uuid
# Generate a random UUID v4
new_uuid = uuid.uuid4()
print(new_uuid) # e.g. 550e8400-e29b-41d4-a716-446655440000
print(str(new_uuid)) # as string
print(new_uuid.hex) # without hyphens: 550e8400e29b41d4a716446655440000
# Generate multiple UUIDs
uuids = [str(uuid.uuid4()) for _ in range(5)]
for u in uuids:
print(u)
# UUID v1 (time-based, includes MAC address β less private)
time_based = uuid.uuid1()
print(time_based)
# Parse an existing UUID string
parsed = uuid.UUID("550e8400-e29b-41d4-a716-446655440000")
print(parsed.version) # 4Comments & Feedback
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