Lösenordsgenerator

Lösenordsgeneratorn skapar kryptografiskt slumpmässiga lösenord i valfri längd med versaler, gemener, siffror och specialtecken. I en era med miljarder exponerade uppgifter per år är ett starkt, unikt lösenord din viktigaste försvarslinje. Till skillnad från mänskliga lösenord innehåller algoritmiskt genererade lösenord inga exploaterbara mönster.

Testa sedan styrkan på ditt lösenord med vår Lösenordsstyrka Testare. Använd aldrig samma lösenord för flera konton — ett enda intrång äventyrar alla konton med identiskt lösenord.

What makes a password truly strong?

The NIST Special Publication 800-63B (2017) fundamentally changed how security professionals think about password strength. The old paradigm — mandatory complexity rules like "must include uppercase, number and symbol" — turns out to be counterproductive because it leads to predictable patterns (Password1!, Summer2024!). NIST's updated guidance: length matters more than complexity. A 20-character passphrase of random words ("coffee-mountain-river-lamp-27") is far stronger than an 8-character "complex" password and vastly easier to remember. Our generator uses a cryptographically secure random number generator (CSPRNG) — not JavaScript's regular Math.random() which is not cryptographically secure — to generate genuinely unpredictable passwords.

Why you need a different password for every site

Data breaches expose billions of credentials annually. When a site is breached, attackers immediately use the stolen username/password pairs to attempt logins on every major service — a technique called credential stuffing. If you reuse passwords, a breach at one minor site can unlock your email, banking and social accounts. Use a password manager (Bitwarden, 1Password, KeePass) to generate and store unique passwords for every service. After generating your password here, check its strength with our Password Strength Checker.