UUID V4

128 bits, 16 bytes

122 bits of entropy, 5.31691198 × 10³⁶ possible IDs

“...the odds of collision between any two is 1 in 2.71 x 1018 Put another way, one would need to generate 1 billion v4 UUIDs per second for 85 years to have a 50% chance of a single collision.”

46eb462c-10d7-4fd8-a64d-75d064b9b916
ccefbc2c-5080-4aaf-8658-3b04072a3a3b
8b671b75-7a0d-4d14-b8be-b7ed2e4ce5cc
d5b624f2-92d1-489c-b34d-fd2835738f3b
bbb0c0c7-a00b-4741-99b9-2b5ff3f5d497
c02d6491-7050-439d-be81-3abf2eaeabdf
ecd5f636-68ed-4dea-bd16-bcd660fb2e2b
c2335913-d9ce-4a2f-8316-55ec24a846a8
e595a0b7-0714-4134-bb5f-9f6c6069b2d2
30609c83-e3b9-4396-842b-7b12a3440cd2
    

OLC IDs

7 bytes

51.863 bits of entropy, 4.096 × 10¹⁵ possible IDs

Open Location Code (OLC) alphabet Ids. OLC is a geocoding system that encodes latitude and longitude into a short string of characters. The alphabet is simplified to use only uppercase letters and digits, excluding characters that can be easily confused (like '0' and 'O', '1' and 'I').

MFPW-28RM-6C5V
8QX4-X9CC-CV8V
QJGG-7FW2-VF8V
HM23-VC6R-63CM
794H-F6FR-CR8H
44J5-WFGR-GR87
WJ53-JPP6-2J8G
39XG-X294-P2RW
Q6FV-PHQ8-F4J7
75V2-GRV2-4JH2
    

Double UUID V4

256 bits, 32 bytes

244 bits of entropy, 2.8269553 × 10⁷³ possible IDs

3918bdf9-48bc-40a1-9eee-bdb0da3248e4-0af15a25-d18f-4beb-a333-e88ee6829076
6a5be95f-9e15-4c3e-bb2e-d22b11799e3d-1d749e53-4aea-48bd-88a4-7bc86cebd0c7
80aeb88f-adea-4aa5-b757-bec3c1c3b43c-affe54ff-9e31-4ed3-a4ec-f942b0a6cc40
a1bf9c49-65e3-4fc3-b4b3-29d8bf014d13-69e38487-226e-4873-bde7-cf24057bd610
93fa755f-a955-4855-ad44-60408a433f94-9758d4a7-d41f-4948-92df-9f2c6e195ef5
7d6e99ee-9c27-4223-8f8e-9fc47883051a-c69db951-9b09-4262-b772-aecac73e0900
4a36ab2f-f03b-4ee2-aab0-c4848ccc7065-82679c47-a163-4c23-a79e-49b3ff89e6a5
53d10688-a86d-489d-a37a-eadd0e3b4570-ef773c16-0ac7-4764-b17a-e511a4d264f2
6b771fcb-ba77-4bd5-a0e7-fb1f28d68df9-1b9cd3b2-b4b8-426a-befd-a3683e8f277e
dce2fe79-ac61-42a9-9123-21f8200b1ea4-4f1e5dda-1c78-46ec-90de-dd07fe49f235
    

UUID V7

Unix ms timestamp (48-bit), random bits (74-bit total). Sortable by time.

Excellent DB performance (sequential inserts); sortable; no MAC leakage. Database primary keys; distributed systems. Recommended for most modern apps/DBs.

019bbfcb-437c-75dd-a513-ddf65ac70757
019bbfcb-437c-75dd-a513-e0de240a846f
019bbfcb-437c-75dd-a513-e7486f575261
019bbfcb-437c-75dd-a513-ea7edb55d904
019bbfcb-437c-75dd-a513-ec7d0daa5f29
019bbfcb-437d-70ff-b8f0-b85065b7afc8
019bbfcb-437d-70ff-b8f0-bfc8218bb6bb
019bbfcb-437d-70ff-b8f0-c3726ab1af43
019bbfcb-437d-70ff-b8f0-c54a6e7d7171
019bbfcb-437d-70ff-b8f0-c809eb7ceda8
    

Names (Short)

Randomly generated people names.

Lynne Inge
Christabel Jemimah
Yolanthe Noelani
Winny Elonore
Didi Anett
Ambur Otha
Elyse Mitzi
Sean Amy
Anselma Gusella
Wilmette Pamelina
    

Names (Long)

Randomly generated people names.

Aarika Blinny Karleen
Felicity Marylin Fredericka
Selie Josie Beverie
Jonis Bernardine Candy
Jannelle Caty Correy
Domeniga Diandra Cyb
Kaia Loralee Leanora
Micheline Rhodie Annnora
Zora Karol Cristie
Claudia Junia Orella
    

Countries

Randomly generated country names.

Costa Rica
Palau
Falkland Islands
Yemen
Nauru
French Polynesia
Denmark
Tokelau
Antarctica
Cape Verde
    

Passwords

Randomly generated secure passwords.

R8IV0_g(XudX#md]TA!c
WF:xBFDoKq-WRW&<ur2_
81nKW23:E}%m8g4?g=?6
3D&s@Jo:b2CPnhH8-XuV
C%qa>6$iZvF*x)4j8m,u
*Iw+|ayN*B-jwog%U7{)
x)J0DE>6Ei0[8X)pD]6@
l#a!|M[{oB|f(5N,(yo0
A_Ijd?(X_mnL.lWw)u|9
yy<SE6tc>*p][&t1(oCi
    

Process Folder Names

Sequentially generated process folder names.

20260115-035527-P7MX86
20260115-035527-X285Q9
20260115-035527-248R8J
20260115-035527-JVF3HX
20260115-035527-JCM2VG
20260115-035527-PQPJ8M
20260115-035527-M2W9RJ
20260115-035527-584R7X
20260115-035527-5PHX5R
20260115-035527-467GGM