Nano ID Generator & Collision Planner

Choose a unique ASCII alphabet, size the ID from entropy and collision risk, compare address space, and generate unbiased Web Crypto samples in your browser.

IDENTIFIER UTILITIES · PRIVATE BROWSER WORKSPACE

Choose the collision budget.

Choose a unique ASCII alphabet, size the ID from entropy and collision risk, compare address space, and generate unbiased Web Crypto samples in your browser.

COLLISION BUDGET

Choose length from your expected volume.

UNIFORM ASCII

Set the unique character set and how many records will share its address space. Rejection sampling keeps every accepted symbol equally likely.

Alphabet · unique ASCII characters

ID LENGTHEXPECTED RECORDSSAMPLE COUNT

ENTROPY PER ID

126.0 bits21 characters × 64 symbols

ALPHABET SIZE64 symbols

POSSIBLE IDS8.51e+37

COLLISION CHANCE5.87e-33

RANDOM SOURCEWeb Crypto

The modeled accidental-collision risk is extremely small, but enforce a unique database constraint. ID secrecy is not authorization; do not use random IDs as access controls.

CRYPTOGRAPHIC SAMPLE

Generated IDs

0 / 5 samples

Private by design · Input is processed in this browser. Collision probability is an estimate; IDs are not credentials.

Need a feature from the original version? Open the current ECECH tool

How this app works

Choose a unique ASCII alphabet, size the ID from entropy and collision risk, compare address space, and generate unbiased Web Crypto samples in your browser.