Password Generator Online
Generate strong, cryptographically random passwords instantly. Free, private, browser-based.
How to Use
- 1. Set the desired length (4–128 characters) using the slider.
- 2. Choose the count of passwords to generate (1–10).
- 3. Toggle character types: Uppercase, Lowercase, Numbers, Symbols.
- 4. Click Generate — passwords appear instantly.
- 5. Click Copy next to any password to copy it to clipboard.
About This Tool
Our Password Generator creates cryptographically secure random passwords directly in your browser using the Web Crypto API's crypto.getRandomValues() function. This is the same standard used by security professionals — far more secure than Math.random().
Weak passwords are the #1 cause of account breaches. Dictionary words, names, or short passwords can be cracked in seconds with modern hardware. A 16-character random password using all character types has over 9516 possible combinations — effectively impossible to brute-force.
Every password generated stays 100% on your device. Nothing is sent to any server. Close the tab and the passwords are gone forever. This privacy-first approach means you can safely use this tool for any account, including banking and email.
Use different passwords for every account. If one site is breached, attackers won't be able to access your other accounts with the same credential. Pair this tool with a password manager like Bitwarden (free and open-source) to store your generated passwords securely.
The strength indicator analyzes your first generated password across 7 factors: minimum length, medium length, long length, uppercase presence, lowercase presence, numbers, and special characters — giving you an instant visual indicator of how strong your password is.
You may also find our Password Strength Checker, Hash Generator, and UUID Generator helpful.
Don't want to install a password manager just to generate one password? See how UseToolify compares to built-in password generators.
Frequently Asked Questions
How does the password generator work?
It uses your browser's built-in cryptographic random number generator (crypto.getRandomValues) to create truly random passwords from your chosen character set. This is cryptographically secure randomness, not predictable Math.random().
Are the generated passwords stored anywhere?
No. All passwords are generated entirely in your browser and never sent to any server. They disappear when you close the tab. Your privacy is guaranteed.
What makes a password strong?
A strong password is at least 12–16 characters long and uses uppercase letters, lowercase letters, numbers, and symbols. Avoid dictionary words and personal information.
How many passwords can I generate at once?
You can generate up to 10 passwords at once using the count slider. This is useful when you need multiple unique passwords for several accounts quickly.
Can I use these passwords for my accounts?
Yes! These are cryptographically random and very secure. We recommend storing them in a password manager like Bitwarden or 1Password for safekeeping.
Is a password generated by a website actually secure, or should I only trust my password manager?
It's exactly as secure, for the same reason: this tool uses crypto.getRandomValues(), the same cryptographically secure randomness that password managers use internally — not predictable Math.random(). The generation happens entirely in your browser with zero network requests, so nothing is transmitted or logged. If you already use a password manager, its built-in generator is still more convenient since it saves the password for you automatically.
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Guide
How to generate a strong random password
The password generator builds random passwords from the character types you switch on, at the length you choose, entirely inside your browser. The randomness comes from crypto.getRandomValues, the browser's cryptographically secure generator, and not from Math.random, which is not used to pick the characters. Each position is drawn independently from the whole pool.
Length matters most. With all four types on, the pool has 88 characters, and 16 characters from it give about 103 bits of entropy, far beyond what guessing attacks can reach, provided the password is unique to one account. The tool does not keep passwords, so you need a password manager or another safe place.
Step by step
- One 16-character password is generated as soon as the page loads. After any change below, press Generate, because the sliders and toggles do not create a new password on their own.
- Set Length with the slider, from 4 to 128 characters.
- Set Count from 1 to 10 if you want several passwords at once.
- Switch character types on or off with the four buttons: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9) and Symbols (!@#...). Highlighted buttons are on, and all four start on. The symbol set is !@#$%^&*()_+-=[]{}|;:,.<>? (26 symbols).
- Press Generate Password (or Generate Passwords when Count is above 1) for a fresh set.
- Use Copy beside a password, or Copy All to copy several, one per line. Paste into your password manager straight away, because they disappear when you close or reload the page.
When this is useful
- Creating a unique password for a new online account, such as shopping, banking or email, and saving it in a password manager.
- Replacing a reused or guessable password after a breach notice.
- Setting a long random password on a router admin page or guest Wi-Fi.
- Producing a numeric code where only digits are allowed, by leaving only Numbers on, keeping in mind that short numeric codes are weak.
Worked example: A password for a new email account
You leave Length at 16, Count at 1 and all four types on. The pool is 26 uppercase + 26 lowercase + 10 digits + 26 symbols = 88 characters, so there are 88 to the power 16, about 1.3 x 10^31, possible passwords, and the meter shows Very Strong. As an illustration only, an attacker testing a trillion guesses per second against a leaked hash would need about 4 x 10^11 years to cover every combination, but only roughly an hour for all 88^8 combinations of an 8-character password. Real speeds vary with how a site stores passwords, so treat this as a scale comparison.
Tips for better results
- Use 16 characters or more for accounts that matter. If a manager fills it in for you, 20 or more costs nothing.
- Some sites reject certain symbols or cap length. Turn off Symbols or lower the length rather than editing the password by hand.
- The tool does not force each chosen type to appear. With all four on, a 16-character password has roughly a 15% chance of missing at least one type, and about 28% at 12 characters. Generate again if a site insists on one of each.
- Use a different password for every account, and add two-step verification where it is offered.
Common mistakes
- Treating the Strength meter as proof. It scores only a single password, by length thresholds (8, 12, 16) and which types appear. It rates 16 random lowercase letters, roughly 75 bits, as Medium, and 8 characters with all four types, roughly 52 bits, as Strong.
- Changing a slider or button and copying the old password. The text on screen comes from the last Generate click. If you switch every type off, Generate does nothing and the previous password stays visible.
- Saving the result somewhere unsafe, such as an unlocked notes app or a screenshot. Use a password manager.
- Reusing one generated password on several sites. If one site leaks it, all of them are exposed.
- Shortening a generated password by deleting characters until it is easy to remember. Cutting a random 16-character password to 8 drops it from about 103 bits to about 52.
Your files and privacy
The characters are generated in your browser with crypto.getRandomValues and shown on your screen. The tool's code makes no network request and does not store or log the passwords, which vanish when you close or reload the page. The clipboard is shared with other apps on your device, so paste the password promptly and copy something harmless afterwards.
Frequently asked questions
Is it really random, or does it use Math.random?
It uses crypto.getRandomValues, which draws from your operating system's secure random source, and Math.random is not used for the characters. Each character is chosen by taking a 32-bit random number modulo the pool size, which introduces a bias of about one part in a hundred million and is not practically exploitable.
How long should my password be?
Sixteen or more random characters is a sound choice for important accounts, and the tool allows up to 128. Some sites cap length, so check their rules and adjust the settings.
Does every password contain all the types I selected?
No. Characters are drawn from the combined pool with no rule forcing one of each type. Short passwords often miss a type, and even 16 characters miss one about 15% of the time with all four on. Press Generate again if a site demands a mix.
Can I exclude look-alike characters such as O and 0?
There is no such option, only the four type buttons. If look-alikes are a problem, turn off the type that causes them, or generate again until the password is easy to read.
Where are generated passwords stored, and is this safe for banking?
Nowhere: they exist only in the page while it is open, so save the one you intend to use before you leave. The random generation is sound, and the weak points are usually elsewhere, such as how you store the password, phishing pages and malware. This is general information, not professional security advice.
Guide reviewed 2026-10-11 by the useToolify team.
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