Nano ID Collision Calculator

Nano ID is a unique string ID generator for JavaScript and other languages. As any other ID generator Nano ID has a probability of generating the same ID twice, i.e. producing a collision. The purpose of this calculator is to find ID length for chosen alphabet safe enough to avoid collisions.

Alphabet:

The length of ID: symbols The speed of ID generation: IDs per hour second

of work are needed in order to have a 1% probability of at least one collision.