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🆔 Tool 17 · ID Generator
UUID / ULID / NanoID
Generate 4 loại ID: UUID v4 (random), UUID v7 (time-sortable, RFC 9562 mới nhất), ULID (Crockford), NanoID (custom length). Batch 1-200.
1
01a09968-87b0-71c6-9189-e34736ff1a9b36c2
01a09968-87b1-74a0-b79d-51639c0955b936c3
01a09968-87b1-74f1-9e75-19999764f6cc36c4
01a09968-87b1-7f13-bbd7-d71e653f388b36c5
01a09968-87b1-7bf2-86a1-ccaf896e4b3b36c6
01a09968-87b1-7ffe-82d1-b8cc8293706936c7
01a09968-87b1-7e26-bfac-d848f2d70be936c8
01a09968-87b1-7a0b-99b6-744b767c7b7e36c9
01a09968-87b1-77ff-b65f-0a60979d2a4336c10
01a09968-87b1-7fb7-a4ca-25784017a14236cKhi nào dùng gì?
UUID v4Default cho database row IDs khi không cần sort theo thời gian. 128-bit random.
UUID v7Nên dùng cho DB primary key - sortable theo timestamp, btree index hiệu quả. Mới (RFC 9562, 2024).
ULID26 ký tự, base32 Crockford (không có I, L, O, U). Sort theo time, copy-paste an toàn (case insensitive).
NanoIDURL-safe, ngắn hơn UUID. 21 char = entropy ~126 bits. 12 char = ~74 bits (đủ cho 10M IDs).