Using weak or reused passwords is the single biggest security risk for most people online. "Password123", your name + birth year, or your pet's name are cracked in seconds. Here is how to generate genuinely strong passwords and why it matters.
What Makes a Password Strong?
Length: Each additional character multiplies the combinations exponentially. 8 characters = weak. 12+ characters = strong. 16+ = very strong. Randomness: No dictionary words, names, dates or patterns. A truly random string of characters is exponentially harder to crack than a "l33t-speak" variation of a word. Uniqueness: Every account should have a different password. One breach should not compromise all your accounts.
How to Generate a Strong Password — Step by Step
- 1Open NextifyTools Password Generator (free, runs 100% in your browser)
- 2Set length to at least 16 characters
- 3Enable all character types: uppercase, lowercase, numbers, symbols
- 4Click Generate — a cryptographically random password appears
- 5Copy and save it in a password manager (Bitwarden, 1Password, or your browser)
How Long Does It Take to Crack a Password?
Using modern hardware: 6 characters (numbers only) = instantly | 8 characters (letters + numbers) = 2 hours | 12 characters (mixed) = 3 years | 16 characters (mixed with symbols) = millions of years. Length is more important than complexity. "correct-horse-battery-staple" (a passphrase) is both memorable and extremely strong.
Use a Password Manager — Not Your Memory
You cannot memorise 50 unique 16-character random passwords. You should not try. Use a password manager: Bitwarden (free, open source), 1Password, or the built-in password manager in Chrome, Safari or Firefox. Let the password manager generate, store and fill passwords automatically. You only need to remember one strong master password.
Frequently Asked Questions
Is the password generator safe? Does it send passwords to a server?
No. The password generator runs entirely in your browser using the Web Crypto API. No passwords are ever sent to any server. You can even use it offline.
What is a passphrase and is it better than a password?
A passphrase is 4+ random words (e.g. "purple-fish-clock-mountain"). It is easier to remember and often stronger than a 10-character random password. The passphrase option in the generator uses truly random words.
Should I change my passwords regularly?
The old advice to change passwords every 90 days is outdated. Modern guidance (NIST): use strong unique passwords and change them only if there is reason to suspect compromise.
How many characters should my password be?
Minimum 12 characters for regular accounts. 16+ for banking, email, and social media. 20+ for high-value accounts. Length is the most important factor.
Use the Password Generator tool directly in your browser.
Password Generator