Quay lại
🆔 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
019f4625-5c26-7384-8aa2-c00b5439c09736c2
019f4625-5c26-7e2d-ae3d-feb6d27b740a36c3
019f4625-5c26-7595-8d05-5a4ef33f9c7436c4
019f4625-5c26-7361-a294-cffd0ffdc4f936c5
019f4625-5c26-78ad-95d5-28fe404797a436c6
019f4625-5c26-73b0-b969-de1c9523c47436c7
019f4625-5c26-70d4-aa66-2a4623b4838a36c8
019f4625-5c26-7308-8b74-a401614aa12936c9
019f4625-5c26-7d2b-824d-484cf76e403d36c10
019f4625-5c26-7005-bd5a-738d340f274336cKhi 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).