Password for
Battle.net
A Battle.net account requires between 8 and 16 characters and accepts uppercase, lowercase, numbers and symbols, but the 8-character minimum is far too weak for an account that ties together World of Warcraft, Diablo, Overwatch and Call of Duty, along with your stored payment details, Balance funds and years of character progress. Because Battle.net caps passwords at 16 characters, the practical recommendation in 2026 is to use all 16: a random string drawing from every character class, which produces roughly 105 bits of entropy and takes a modern GPU cluster longer than the universe has existed to brute-force. Generate one below — it is created inside your browser using the Web Crypto API and never sent to a server. Using the full 16-character cap means you sacrifice nothing to Blizzard's length limit. Pair it with the Battle.net Authenticator so a stolen password alone can never sign in.
guesses / second
Battle.net password rules
Gaming accounts are frequently targeted for in-game items and linked payment cards. Use a unique, strong password and enable 2FA.
The maths is unforgiving. An 8-character password using only lowercase letters gives 26⁸ = roughly 209 billion combinations, which a single consumer GPU can exhaust in minutes, and even meeting Battle.net's minimum across all four character classes only reaches about 52 bits — still crackable in days offline. Only when you reach 12 characters with all four classes does the keyspace become genuinely impractical to attack offline. Battle.net's 16-character ceiling is the most you can use, so the default here fills it completely: a 16-character mixed string lands at roughly 105 bits of entropy — comfortably above the NIST SP 800-63B recommendation of 80 bits for high-value accounts, and the strongest password the cap allows.
Why Battle.net accounts are targeted
Battle.net accounts are valuable targets because a single login can hold high-level WoW characters, rare cosmetics, Diablo loot and a stocked CoD profile, all of which carry resale demand, alongside stored payment methods and Balance funds. Attackers seldom brute-force the login; they run credential-stuffing campaigns, replaying leaked email-and-password pairs from other breaches against Blizzard's sign-in, relying on widespread password reuse to score hits. Each compromised account can be sold, stripped of in-game assets or used for fraudulent purchases. A unique, high-entropy password filling the full 16-character limit removes the reuse weakness these automated attacks depend on.
Common questions about Battle.net passwords
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Reviewed by Marcin Lewandowski — product designer, 20+ years building digital products and privacy-respecting tools.
Last reviewed: . Reviewed quarterly; primary sources re-checked each review.