Alphanumeric Password Generator

A password made only of letters and numbers — uppercase A–Z, lowercase a–z, and digits 0–9 — with no symbols or punctuation. That is a 62-character pool per position, and when each character is chosen at random it produces genuinely strong passwords despite the smaller set.

Sixteen or more characters of true randomness, mixing cases and digits with no words, dates, or patterns — the examples below are generated fresh in your browser each time you load this page. What makes one strong is the random selection, not any visual property you can check by eye.

Yes, at sufficient length. A random 16-character alphanumeric password has about 95 bits of entropy — computationally infeasible to brute-force. Symbols add roughly half a bit per character; skipping them costs little, and adding one or two characters of length more than compensates.

At least 16 characters, which yields about 95 bits of entropy. Use 20 characters (~119 bits) for high-value accounts or wherever you want the same margin as a full-symbol password of similar length. Length is the lever that matters — the character set is secondary.

Requirements phrased as “8-digit” or “16-digit alphanumeric” almost always mean total characters, not numerals — an “8-digit alphanumeric password” is 8 characters of mixed letters and numbers. Set the length slider to the required number and you satisfy the rule.

Common cases include older banking and government portals, enterprise systems with legacy input validation, database and API credentials embedded in connection strings or environment files, and devices where symbol entry is impractical. When a form rejects your password, dropping to alphanumeric is usually the fastest fix.