Password Generator

Create a strong random password in one click. Choose the length and characters, and see how long it would take to crack.

Your Password

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Strength—

Strength (bits)—

Est. crack time—

What Makes a Password Truly Secure

People tend to build passwords out of predictable patterns: pet names, birth years, favourite teams. Attackers try these first, along with billions of passwords leaked in past breaches. This generator avoids that by creating truly random passwords on your own device.

How Password Strength Is Measured

For a random password, strength is measured in "bits" — the higher, the harder to guess. It depends on two things: the number of different characters you use and the length of the password.

The Strength Formula

E = Length × log₂(Pool Size)

Pool Size (The Base Character Set)

Lowercase only (a-z): Pool size of 26. Weak.
Alphanumeric (A-Z, a-z, 0-9): Pool size of 62. Moderate.
Maximum Scope (Adds Symbols): Pool size of 94+. By adding symbols (!@#$), you expand the pool significantly, which makes dictionary-style brute-force attacks far less effective.

Crack Times, Roughly Speaking

A powerful modern computer can try roughly 100 billion guesses per second against a leaked, weakly protected password. Against that:

An 8-character password using only lowercase letters can be cracked in under 3 milliseconds.
A 10-character alphanumeric password takes roughly 45 minutes.
A 16-character random password with letters, numbers and symbols has about 104 bits of strength, which would take an estimated 4 trillion centuries to crack with current hardware.

Why Your Password Should Stay on Your Device

With any online password generator, the key question is whether your password stays on your device. Here it does: the password is created on your device using a secure random source and is never sent anywhere.

Managing 16+ Character Passwords

Memorizing many unique 16-character random strings isn't realistic for most people. Security professionals generally recommend pairing this generator with a Password Manager (e.g., Bitwarden, 1Password, KeePass). A reasonable workflow looks like this:

Use this generator to create a 20-character, symbol-rich random string.
Save it directly into your Password Manager.
Memorize only your Password Manager's "Master Key" passphrase (ideally 4-5 random dictionary words strung together, known as the 'Diceware' method).

How Password Length and Character Sets Affect Security

A password's strength is how many possible combinations an attacker would need to try before guessing it. It grows with both the length and the variety of characters (lowercase only vs. mixed case, numbers and symbols) — and length matters more than most people expect.

As a rough guide, an 8-character password using only lowercase letters can be brute-forced by modern hardware in a matter of hours, while a 16-character password mixing uppercase, lowercase, numbers, and symbols would take an impractically long time with current technology. Longer, more varied passwords dramatically outperform shorter "clever" substitutions like replacing letters with similar-looking numbers.

Length Beats Complexity: A longer password with a smaller character set is often stronger than a short one with symbols.
Unique Per Account: Reusing passwords means one breach compromises every account using that password.
Use a Password Manager: Store generated passwords in a password manager rather than reusing memorable ones.

Cybersecurity Directives

Frequently Asked Questions

Hardcore realities regarding modern password protection protocols.

Length matters more than complexity here. A 15-character password of only lowercase letters has roughly 70 bits of strength. An 8-character complex password has only about 52 bits. The longer simple password is far harder to crack. Length matters more than most people expect.

No. These are known as "Leet-Speak Substitutions." Attackers have programmed their brute-force dictionaries to try common substitutions (a=4, s=$, etc). Genuine security comes from unpredictable, random characters, not predictable substitutions.

No. The password exists only on your screen. Nothing is saved or sent anywhere, and once you close or refresh the tab it is gone.

Past roughly 30 mixed characters the benefit shrinks quickly, since guessing it would already take longer than the age of the universe. Some older systems also limit passwords to around 64 characters and may cut off or reject longer ones.

No. NIST guidance generally recommends changing passwords when there is evidence of compromise rather than requiring arbitrary periodic changes. Rotate a strong random password mainly if there is a verified data breach.