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.”

da5eb58d-c64c-4998-b55e-e1f4dca1e03e
d38ad69b-78bd-4501-9f28-94fcd3ffe1e4
f59376a0-73c2-415a-8d9c-8a06dd4631fa
86bfbe23-0a08-4554-8bfe-1c4d7bc9200e
ee0f8c85-3124-4c75-956e-e869ef0353e0
9d70e60c-f08f-4671-8dab-5e1ed5836141
0962031b-1cb8-4060-9ace-6d80b6178d2d
1186f14e-0d96-4fea-9537-701fae94fc45
5d478084-f407-4f5e-b8ca-f0964eeac4f9
fcdb10ff-9a82-4dfc-a79a-da522fa822c9
    

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').

C9XR-FWXG-57H6
9Q68-VRJ2-8G2H
PW32-CQF2-8Q46
6QH6-H7FC-5P53
FJM6-4WFR-477J
7MHG-JF4X-H26W
28C5-V5FQ-G7CQ
RG6H-JV98-JXC9
MC72-4M6F-JRWM
Q34C-V35G-P2J3
    

Double UUID V4

256 bits, 32 bytes

244 bits of entropy, 2.8269553 × 10⁷³ possible IDs

a7f9485b-5b6d-4dc9-8bfc-e37765ba8244-02ccf173-bd6c-4c55-b6ea-1289c7e04107
51868f12-f6cc-49bc-8edf-7b1b7dea38e5-f781fdea-ccd6-43cc-bd08-8590c5fc6d92
056036fd-3552-4165-845c-b850f9a52ab0-627246c8-cc97-400e-bf23-5157a487efc6
a0eadc9f-22f0-4ab8-b472-b88ddbfba731-afa989a1-f01b-4ad4-8175-172164265fad
8d67da6f-8da7-4182-98e3-d402b4b66493-197040a2-216c-45a3-829c-0b777dbb9b12
80ea3832-b640-4df7-a51c-11c56fff02e6-727926b3-bbd8-490d-8a05-b4bfe336d353
7fcede41-424d-4ca2-851b-e4e925878c2a-853e8e3b-2c8e-41c2-a65b-b3903e8e3aab
e8fb8387-8811-4d82-b8ba-9d60b498e9c5-84d4ea95-d8cf-4f70-8da7-d36c7be63812
47c5204f-a6bf-414c-9cf1-bba354fdce45-3282e92f-ef62-439b-95b9-6febda95af74
4e3ac503-dd57-4b1c-8bbf-b0745aa6c4a8-a80b5e15-f17e-4045-a711-5e19e22a97b3
    

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.

019cad53-79bc-752d-b284-f7352fa6b06a
019cad53-79bd-75f8-baaf-c50387aa17f7
019cad53-79bd-75f8-baaf-c9e2c7d073c6
019cad53-79bd-75f8-baaf-cec64c8db4c3
019cad53-79bd-75f8-baaf-d0f730f46bf6
019cad53-79bd-75f8-baaf-d493691ec491
019cad53-79bd-75f8-baaf-db9e90f830a6
019cad53-79bd-75f8-baaf-df75e9dbc979
019cad53-79bd-75f8-baaf-e0d71277c6de
019cad53-79bd-75f8-baaf-e43f88991c76
    

Names (Short)

Randomly generated people names.

Lona Lebbie
Mel Georgette
Mabel Auguste
Myrah Tracie
Eleanora Devan
Lesli Glenna
Austina Lily
Berna Ester
Rene Martita
Vitoria Greer
    

Names (Long)

Randomly generated people names.

Patience Ericha Eden
Vinni Hermina Tasha
Doria Reine Simona
Wilhelmina Marnie Tim
Ines Ginni Sibeal
Kary Cherye Ealasaid
Colette Keri Una
Holly Virginie Dee
Willie Candra Hyacinthie
Theodosia Arlana Bamby
    

Countries

Randomly generated country names.

Mexico
Kosovo
Andorra
Tokelau
St. Pierre & Miquelon
Bahamas
Isle of Man
Svalbard & Jan Mayen
Ethiopia
Taiwan
    

Passwords

Randomly generated secure passwords.

ZkNluVbi$l!<fx3m7Sg#
_M:BdDU[x)AO],[1]gP}
R2G?vApe(k+#n}&n6pU<
s&848E_tcKrR7UETPtB_
>G2VhvbZj@D97#3@[r@b
rB@mNrr2Fss=-Q0{YM}C
0h:}Y(v?DG!*^GI=UC6_
^y2[[rH-H]Eqh7!Rpgsk
(jGiQ3kQpKVqol8{RG%)
2=a9gz}FoYB=g=54VfsH
    

Process Folder Names

Sequentially generated process, human-readable, folder names.

20260302-065414-3M5W96
20260302-065414-9GH5CR
20260302-065414-M7FHVF
20260302-065414-4XQV79
20260302-065414-XGG3G4
20260302-065414-W8982X
20260302-065414-FM8X64
20260302-065414-Q2JMQR
20260302-065414-X278VH
20260302-065414-J87X76
    

Google-like IDs

Randomly generated Google-like 'sub' IDs.

919867110635323860426
346972199592056052613
732026420801830514214
405114660691395438736
084970747589322689022
045484202884895060645
830780225004597479132
065403593682778524138
715008320316444264721
574126896237883700968
    

Unix Timestamps

Randomly generated Unix timestamps from the past 2 months.

1769949810
1771116250
1769876810
1770945039
1768200286
1768989824
1768440757
1771584386
1768417780
1770150302
    

GUIDs

Randomly generated GUIDs.

sSv5E15pn8cM
340hLMnbVMM0
nRFuR1v5TO62
jvSklAoupsZo
Ar8q2UVrMnDP
IgGCbYZbMRfm
gX9ok_KECXV-
OK373u39zFn5
z1pIBbB9Ymgt
I-dbIP6ZJVn0