Password for
Nintendo Account
A Nintendo Account requires between 8 and 20 characters and accepts uppercase, lowercase, numbers and symbols, but the 8-character minimum is far too weak for an account that links your Switch, your eShop wallet, saved payment details, Nintendo Switch Online subscription and any Nintendo purchase history. With the cap at 20 characters, the practical recommendation in 2026 is a 14-character random string drawing from all four character classes, which produces roughly 92 bits of entropy and is computationally infeasible to brute-force offline. Generate one below — it is created inside your browser using the Web Crypto API and never sent to a server. The 20-character ceiling leaves room to go longer still if you want extra margin. Pair the new password with Nintendo's two-step verification so that a stolen password alone can never sign in or spend from your eShop balance.
guesses / second
Nintendo Account 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 Nintendo'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. The 14-character mixed default this page generates, sitting just under Nintendo's 20-character cap, puts you at roughly 92 bits of entropy — comfortably above the NIST SP 800-63B recommendation of 80 bits for high-value accounts, and enough to make an offline attack pointless.
Why Nintendo Account accounts are targeted
Nintendo Accounts are targeted because they often carry a linked eShop wallet, stored payment details and a credit-card-backed purchasing flow, making a hijacked account directly monetisable through fraudulent game and currency purchases. In 2020 Nintendo confirmed a wave of credential-stuffing attacks that compromised roughly 300,000 accounts, with attackers using leaked credentials to access linked payment methods. That mechanism remains the core threat: username-and-password pairs harvested from other breaches are replayed against Nintendo's sign-in, and because so many people reuse passwords, a steady share succeed. A unique, high-entropy password breaks that chain and keeps a leak elsewhere from reaching your wallet.
Common questions about Nintendo Account 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.