Why this tool is useful
Compare password policies with explicit assumptions rather than vague strength labels.
Everyday Calculators · runs locally
Password Search Space Calculator
Calculate password combinations and an idealized exhaustive-search duration from alphabet size, length and attempts per second.
Ready. Your working data stays in this browser.
How it works
The search space is alphabet size raised to password length, then divided by the stated attempt rate. Real attack costs can differ substantially.
Practical example
The default models a 16-character value drawn uniformly from 62 symbols and an idealized billion guesses per second.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.