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.”

957f5adb-3fb2-4731-9909-6b8c4916c200
4d925950-c03f-47b7-bf75-5d72f86f9c45
7eb35d87-771d-4fd3-8201-8aa1fce7dec0
b9cfcf3a-4b84-450e-8cd5-349e3c8e00ac
18edd568-9ce7-46e2-be90-8ee1a4735b89
729d8551-6b68-4db9-bfa1-90f71214e074
c3e3c986-41b5-4515-a640-cd4c749dfb7a
7a803a92-545c-4ef1-b50c-7dbdb739b366
b1a03b26-db4d-49b0-b942-13ee0d93589a
122caa94-e45e-40e3-9835-f4130aa07ec5
    

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').

PHM3-87MH-9GR4
WPXW-CVPQ-HQ5M
6WCC-9Q23-6PCH
532P-XCFV-97XQ
PVC6-46XG-PVPM
J39G-5883-F59F
XQ83-78F5-W9G9
29JH-5PW9-WXXV
9XWC-87XQ-R76P
3MPJ-6588-JFV7
    

Double UUID V4

256 bits, 32 bytes

244 bits of entropy, 2.8269553 × 10⁷³ possible IDs

2354bbd8-f02e-450f-9b78-90905d5cc62e-80788ba1-35cb-45a2-8397-83d1da61b2e2
6d46d6ae-1a37-4d14-a9f8-f00f17ff0f38-7f9cd5d3-8011-4e11-a9a1-da6cc1571597
0673df4a-444e-4c22-96c7-82116c700c4f-e8de8dbe-80a3-4c45-992c-48c41287d9bf
fdc87e4c-5108-41d3-a944-f68ce2c7c9cd-cd4c627f-b056-4077-b461-321de089af79
678a937c-f54c-49c7-a468-b8e39d3c5eb0-464aa8e0-c721-48f0-b95d-85d64c331b99
5cf8ff6b-9e34-421e-bd86-867467802066-c17195c6-d2ed-4f49-b652-88c33b51d036
32cf27d7-3525-4eeb-a0a7-191e7056adda-81e2b9f3-8b47-4498-8e74-30ac15706cac
da6f29b3-a490-4d3f-ae91-7300634df713-59807b0f-8081-454e-9c71-a9c0c907affe
31f48be5-c406-4806-a273-bac67617e9d7-2075a035-4cd3-48eb-a0a6-5d46083c4e65
c0fa7905-3375-47d0-890c-b7c3d1cbe317-3e6b6730-0921-49ce-95c3-dff9dbc526f5
    

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.

019bbf80-671f-741b-b884-55840410cf5f
019bbf80-6720-761c-a37b-5675855ee713
019bbf80-6720-761c-a37b-5b23dfb3df8a
019bbf80-6720-761c-a37b-5df82662ced2
019bbf80-6720-761c-a37b-60c1b086f187
019bbf80-6720-761c-a37b-67ba5e5f45d0
019bbf80-6721-70ff-b1c8-126414419f6f
019bbf80-6721-70ff-b1c8-159b78ba7730
019bbf80-6721-70ff-b1c8-1b96d22ceb2e
019bbf80-6721-70ff-b1c8-1ef94fdb9b00
    

Names (Short)

Randomly generated people names.

Roxie Cilka
Isahella Charla
Rosabelle Rahal
Karna Stephine
Kiley Pauly
Paulina Stella
Mufi Karalynn
Ethelda Vikky
Sheena Kary
Antonia Beverly
    

Names (Long)

Randomly generated people names.

Chloris Grethel Jacquenette
Linn Adelaida Carlie
Janetta Beverlee Angelle
Jordanna Kaycee Ulla
Kaile Chanda Kathrine
Mallorie Deirdre Inga
Joanne Gianina Letti
Roby Stesha Amara
Catherin Natalie Ann
Bryn Auguste Alina
    

Countries

Randomly generated country names.

Lebanon
South Korea
Bosnia & Herzegovina
St. Martin
Zambia
Angola
Tajikistan
Turks & Caicos Islands
Mauritania
Haiti
    

Passwords

Randomly generated secure passwords.

H+a>kt_Y)g.Z,EZG;%cU
i%&M+9KJYAqEK]cOT)<T
Em}x]wL3;Qr1|iuH*DN)
JnU+]3[2_EeQjA!7qdkk
fxkny7y-TRC|N7}]VOfS
vu0NsEjdKNY:MPMP&iUQ
Pn+rhA?=#KL8rj;_;W4q
vnhMRoir{JM*sE#GyiHs
41]45JxRF[iD:1.)z23Y
SUTysthU8_OSTwFrc@%m
    

Process Folder Names

Sequentially generated process folder names.

20260115-023341-X769XM
20260115-023341-G48RFH
20260115-023341-V9GX3J
20260115-023341-89GH39
20260115-023341-HGRG42
20260115-023341-669CPR
20260115-023341-Q5WG5X
20260115-023341-H2H2GP
20260115-023341-QWVQPC
20260115-023341-2P47FV