Password generator and how to make strong passwords
Generate strong random passwords or a memorable passphrase in your browser — any length, in bulk — then learn what makes a password hard to crack.
The strongest password you can make today is also one of the easiest to remember: a long string of random words. Length matters far more than a clever mix of symbols, and the biggest mistake most people make is not weakness but reuse. Use the same password in several places and one breached site hands an attacker the keys to the rest. Use the free generator below to build one now, then read on for why it works and how to stop repeating passwords for good.
Free password generator
Pick a complexity preset or set your own parameters — length, character types, or a memorable passphrase of random words. Need more than one? Generate up to 50 at once and copy or download them. Everything runs in your browser using your device’s secure random number generator, so no password is ever sent anywhere or saved.
Password generator
Built in your browser with secure randomness — nothing is sent anywhere.
A generator solves the hard part — making passwords long, random, and different every time. The rest of this guide covers why that matters and how to keep track of them without memorizing a hundred logins.
Length beats complexity
CISA’s Use Strong Passwords guidance boils a strong password down to three rules: long, random, and unique. Long means at least 16 characters, and CISA is blunt that longer is stronger. Random can mean a mix of upper- and lowercase letters, numbers, and symbols, or, more usefully, a memorable phrase of four to seven unrelated words, which CISA calls a passphrase.
The reason length wins is arithmetic. Each extra character multiplies the guesses an attacker has to try, while swapping a for @ or tacking a 1 on the end follows patterns that cracking tools already know. A short, cryptic J8#kQ2 is both harder to remember and quicker to break than a long, plain copper-violet-antler-drift-moon.
The official standard now says the same thing. NIST’s Digital Identity Guidelines (SP 800-63B) tell the services that store your password to stop demanding complexity. A password used on its own should be at least 15 characters, services should allow at least 64, and they should not impose composition rules such as requiring a symbol or a capital letter. NIST also says a service should not make you change a working password on a schedule, because a forced reset every 90 days just pushes people toward Summer2026! and then Summer2026!!. A change should be required only when there is evidence the password was exposed. Spaces and long passphrases are explicitly allowed.
| Common belief | What actually holds up |
|---|---|
A short password with symbols like P@$$w0rd is strong | Length matters most; predictable symbol swaps are the first thing cracking tools try |
| You must mix uppercase, numbers, and symbols | NIST says services should not force composition rules; a long passphrase of plain words is stronger |
| Changing your password every 90 days keeps it safe | NIST says do not force scheduled changes; change only when a password is exposed |
| A random-words passphrase is easy to guess | Four to seven unrelated words is long, hard to crack, and easy to remember |
Adding 1! to an old password makes a fresh strong one | Attackers know that pattern, and the tweak still links the account to your other logins |
Why reusing passwords is the real danger
When a company is breached, the leaked email-and-password pairs get fed into automated tools that try the same combinations on banks, inboxes, and shopping sites. That attack is called credential stuffing, and it works only because people reuse passwords. If your password is unique to each site, a breach at one costs you one account. If you reuse it, that single leak opens every account that shares it.
Your email is the worst password to reuse, because the reset links for everything else arrive in that inbox. Whoever controls your email can walk into the rest of your accounts one reset at a time.
| Weak habit | Stronger habit |
|---|---|
| One password reused across many sites | A different password for every account |
| A short cryptic string you retype from memory | A long passphrase, or a manager-generated random one |
| Passwords kept in a browser note or on paper | Passwords stored in a dedicated password manager |
| Never checking whether a password leaked | Reviewing breach alerts and changing exposed passwords |
| Password only, with no second step | Password plus phishing-resistant two-factor or a passkey |
Let a password manager do the remembering
Nobody memorizes a different 16-character password for a hundred accounts, and CISA does not ask you to. It recommends a password manager: a program that generates, stores, and fills in your passwords, and flags the ones that are weak or reused. With one running, you only have to remember a single strong password, the one that opens the manager itself. Make that master password a long passphrase you have never used anywhere else.
Both free and paid managers exist. Most web browsers and phones now include one, and independent reviewers like Consumer Reports compare the standalone options. Which one you pick matters less than the habit it makes possible: once a manager fills your logins for you, using a long, random, unique password on every site stops being extra work.
Check whether your passwords have leaked
NIST tells services to compare every new password against a blocklist of known compromised passwords, so a string that already appears in a breach gets rejected before you can reuse it. You can run the same check on yourself. Many password managers and browsers now include a built-in breach or “compromised password” report that warns you when a saved login has turned up in a known leak.
You can also check directly. The free Have I Been Pwned service lets you enter an email address and see which known breaches it has appeared in. If a password shows up anywhere, treat it as burned: change it, and change it on every other account where you reused it.
Where this is heading: two-factor and passkeys
A strong, unique password is the floor, not the ceiling. CISA recommends turning on multifactor authentication, a second step beyond the password, especially for email, social media, and financial accounts. Not every second factor is equal. CISA identifies FIDO-based methods, including passkeys and hardware security keys, as phishing-resistant, while text-message codes can still be intercepted or tricked out of you. Any second factor beats none, so if this is new to you, start by setting up two-factor authentication on your email.
Passkeys go one step further and replace the password entirely with a fingerprint, face, or device PIN, so there is nothing reusable left to steal or leak. You can already set up passkeys on Google, Microsoft, and Apple accounts. And because so many attacks still begin with a convincing fake login page, it pays to know how to spot a phishing email before you type a single credential.
Frequently asked questions
Is this password generator safe to use?
Yes. It runs entirely in your browser and builds each password with your device’s cryptographically secure random number generator. Nothing you generate is sent over the internet, logged, or saved, so closing the page erases it. For a password you intend to keep, paste it straight into your password manager.
How long should a password be?
At least 16 characters, per CISA, and longer is stronger. A four-to-seven-word passphrase easily clears that bar while staying easy to remember. The generator’s strength readout shows the estimated bits of entropy for whatever you build.
What is a passphrase, and is it really strong?
A passphrase is several unrelated words joined together, such as copper-violet-antler-drift-moon. Because its strength comes from length and randomness rather than obscure symbols, a passphrase of four or more random words is both hard to crack and far easier to recall than a short cryptic string.
Can I generate several passwords at once?
Yes. Set the “How many” field to create up to 50 at a time, then use Copy all or Download to save the batch as a text file — handy when you are resetting many accounts in one sitting.
Do I still need a password manager?
A generator makes strong, unique passwords; a password manager remembers them and fills them in. Use both: generate a fresh password for each account and let a manager store it, so you only ever memorize the one passphrase that unlocks the manager.
Start with the accounts that matter
Install a password manager, then let it generate a fresh password for the two or three accounts you care about most, with email first. Turn on a second factor there while you are at it. Do the same the next time any site makes you sign in. Within a few weeks the one or two passwords you reuse everywhere will be gone, replaced by ones you never have to remember and no single breach can chain together.