Protect your accounts with random and unhackable passwords. 100% free, no sign-up and everything runs in your browser.
Generate passwordA secure password is one that is virtually impossible to guess or crack through brute force attacks. It's characterized by being long enough, random, and combining different types of characters.
The following table shows the estimated brute force cracking time based on length and character type, assuming 1 billion attempts per second (modern GPU):
| Length | Numbers only | Lowercase | Alphanumeric | All characters |
|---|---|---|---|---|
| 6 | Instant | < 1 sec | 1 sec | 12 min |
| 8 | < 1 sec | 3 min | 2.5 days | 77 days |
| 10 | 10 sec | 1.6 days | 10 years | 1,900 years |
| 12 | 17 min | 3 years | 102,000 years | 17M years |
| 16 | 116 days | 1.4M years | 1.5B years | Impossible |
| 20 | 3 years | Impossible | Impossible | Impossible |
* Alphanumeric = a–z, A–Z, 0–9 (62 characters). All characters = + symbols (~94 characters).
Attackers use techniques like dictionary attacks, brute force and credential stuffing to crack passwords. To protect yourself:
Generators like PassForge use the browser's cryptographic APIs (crypto.getRandomValues) to create truly random passwords, eliminating the human biases that make our passwords predictable.
Entropy is measured in bits and determines how many possible combinations your password has. A 16-character password with all character types enabled exceeds 100 bits of entropy, making it resistant to even the most sophisticated attacks.
Generate unique and complex passwords for each service and store them in a trusted password manager. That way you only need to remember one master password.
Humans are predictable. We tend to use patterns, common words, birth dates or easy-to-remember sequences. A generator eliminates these biases and produces truly random passwords.
PassForge requires no registration or installation. The entire process runs locally in your browser: no password leaves your device. This makes it one of the safest and most private options for generating passwords online.
Yes, as long as the generator works 100% in your browser without sending data to any server. PassForge uses crypto.getRandomValues, a browser cryptographic API, and never transmits your passwords.
A minimum of 12 characters is recommended, though 16 or more is ideal. The longer the password and the more character types it includes, the higher its entropy and the harder it is to crack.
Entropy measures the unpredictability of a password in bits. It's calculated as log2(charset_size) × length. A password with more than 80 bits of entropy is considered very strong.
No. PassForge generates everything in your browser. No data is sent to external servers. We don't use tracking cookies or store passwords anywhere.
Yes. PassForge is fully responsive and works on any device with a modern browser: smartphones, tablets and desktop computers.
PassForge uses browser cryptography (not Math.random), works offline, has no external dependencies, and is completely open source. It's also fast, lightweight and respectful of your privacy.
In 2026, cybersecurity experts recommend a minimum of 16 characters for important accounts (email, banking, social media) and 20 or more for highly sensitive information. With increasing computing power, short passwords are increasingly vulnerable to brute force attacks.
It depends directly on length and complexity. An 8-character password with only lowercase letters can be cracked in minutes with modern hardware. A 16-character password with uppercase, lowercase, numbers and symbols would take billions of years, making the attack completely impractical. See the timing table in the What is a secure password? section.
No, it's one of the most serious security mistakes. If one of your accounts appears in a data breach, attackers try that password on all known services (credential stuffing). All it takes is one compromised service to put all your accounts at risk. Always use unique passwords for each service.
A brute force attack consists of systematically trying all possible character combinations until finding the correct password. Modern GPUs can perform billions of attempts per second. That's why a short or predictable password can fall in seconds, while a long and random password makes the attack impractical for millions of years.
According to annual security reports (NordPass, HaveIBeenPwned), "123456" remains the most used and compromised password worldwide, followed by "password", "123456789", "qwerty" and "111111". These passwords are cracked in less than a second. If you use any of them, change it right now with PassForge.