Password Generator
Strong, random passwords with adjustable length and character types.
Open tool →
🔒 100% Private & Client-Side
Generate strong, secure passwords in one click
Flassword creates random, cryptographically secure passwords instantly — right in your browser. Nothing is ever sent to a server.
Strong
0 bits of entropy
Password length
Longer passwords are exponentially harder to crack
16
Uppercase letters A-Z
Lowercase letters a-z
Numbers 0-9
Symbols !@#$%^&*
Generated locally using your browser's cryptographic API — never stored, never transmitted.
Why trust Flassword
Four things we think trust should actually be based on.
Verifiable privacy
We say exactly what we collect and what we never do — see our Privacy Promise.
Tested, not assumed
Every tool is checked against known test vectors before it ships — see how we test.
Editorial rigor
Articles are researched, reviewed, and dated — read our Editorial Policy.
No dark patterns
No forced sign-ups, no fake urgency, no hidden data collection. Ever.
More free generator tools
Same privacy-first approach — generated locally in your browser, never stored, never sent anywhere.
Passphrase Generator
Memorable Diceware-style passphrases built from a 1,296-word list.
Open tool →Password Strength Checker
See entropy, crack-time estimates, and tips for any password you type.
Open tool →Username Generator
Memorable, random usernames for new accounts, games, and forums.
Open tool →PIN Generator
Random numeric PINs with optional repeating and sequential-digit avoidance.
Open tool →Random String Generator
Fully random strings for API keys, tokens, coupon codes, and test data.
Open tool →Password Policy Generator
Generate a clear organizational password policy from NIST-style presets.
Open tool →Password Breach Checker
Check if a password has appeared in a known data breach, privately.
Open tool →Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly.
Open tool →Base64 Encoder / Decoder
Convert text to and from Base64 instantly, with full Unicode support.
Open tool →UUID Generator
Generate RFC 4122 v4 UUIDs, one at a time or in a batch.
Open tool →How our tools work
The same architecture behind every generator and checker on this site.
Everything runs in your browser
Generation and checking use your browser's built-in Web Crypto API — no server round-trip for the actual logic.
Nothing sensitive is transmitted
What you generate or type stays on your device. The one disclosed exception is our breach checker, which sends only a five-character hash fragment.
Verified before it ships
Every tool is checked against known, correct results before publishing — see how we test for specifics.
Why people trust Flassword
Built for privacy, speed, and real security — not just a pretty interface.
Truly private
Every password is generated locally in your browser. Nothing is ever sent over the network or logged.
Instant results
No page reloads, no waiting. Your password updates live as you adjust the options.
Cryptographically secure
Powered by the Web Crypto API instead of predictable pseudo-random functions.
Completely free
No account, no subscription, no limits. Generate as many passwords as you need.
Privacy first
Specific enough to check, not just a vague promise.
What we collect
- Aggregated analytics, only with your consent
- Your dark mode preference, stored locally
- Whatever you choose to put in a support email
What we never collect
- Any password, passphrase, or PIN you generate or check
- Text you hash, encode, or decode with our dev tools
- Account credentials of any kind — we have no user accounts
Everything you need in a password tool
Simple controls with the depth security-conscious users expect.
Adjustable length
Choose anywhere from 4 to 64 characters with a single slider.
Live strength meter
See entropy in bits and an at-a-glance strength rating as you type.
One-click copy
Copy your generated password to the clipboard instantly and securely.
Character options
Toggle uppercase, lowercase, numbers, and symbols independently.
Dark mode
Comfortable to use day or night, with a preference that's remembered.
Works everywhere
Fully responsive and fast on desktop, tablet, and mobile devices.
Why millions of passwords fail
The scale of the problem, according to recent independent security research.
78%
of the world's most commonly used passwords can be guessed by an automated tool in under a second, according to research from NordPass and NordStellar.
98.5%
of passwords stolen by malware and analyzed by Specops Software and Outpost24 failed to meet basic modern strength standards.
22%
of data breaches in Verizon's 2025 Data Breach Investigations Report were traced back to stolen or weak credentials as the initial point of entry.
See exactly how attackers exploit this in How Hackers Crack Passwords.
How it works
Three simple steps between you and a secure new password.
Set your preferences
Choose the password length and which character types to include.
Generate instantly
Your browser creates a random password using a cryptographically secure generator.
Copy and use it
Copy the password with one click and paste it into your account or password manager.
Frequently asked questions
Everything you might want to know about using this tool safely.
Yes. Passwords are generated locally in your browser using cryptographically secure randomness. Nothing is transmitted to a server or stored anywhere.
A strong password is long, random, and uses a mix of uppercase letters, lowercase letters, numbers, and symbols. Length matters more than complexity for resisting brute-force attacks.
Security experts generally recommend at least 12 to 16 characters. Longer passwords of 20 characters or more provide even stronger protection against modern cracking techniques.
No. Reusing passwords means that if one account is breached, attackers can access all your other accounts using the same credentials. Use a unique password for every account.
A password manager makes it practical to use long, unique, random passwords for every account without having to memorize them, and is highly recommended alongside this generator.
Featured learning paths
Not sure where to start? Follow one of these in order.
🟢 Beginner path
🟡 Intermediate path
🔴 Advanced & technical
Learn more about password security
Practical, easy-to-follow guides to help you stay protected online.
⭐ Featured articles
The Complete Guide to Password Security
A comprehensive, single-page overview of password security — from the fundamentals to advanced topics — with links to deeper guides on every
Read article →How to Keep Your Online Accounts Secure
A complete, layered checklist that ties passwords, 2FA, and safe habits into one system.
Read article →Password Managers Explained
How encrypted vaults work, whether they're actually safe, and how to choose the right type for you.
Read article →🆕 Newest articles
The Complete Guide to Password Security
A comprehensive, single-page overview of password security — from the fundamentals to advanced topics — with links to deeper guides on every
Read article →The Complete Password Security Checklist
A complete, practical password security checklist covering accounts, tools, and habits — organized so you can work through it step by step.
Read article →Password Security Statistics You Should Know
What independent security research actually shows about password strength, reuse, and breaches — with real, cited figures, not vague claims.
Read article →🔥 Most popular guides
How to Create a Strong Password
A practical, step-by-step framework for building passwords that hold up against modern attacks.
Read article →Why You Should Never Reuse Passwords
Understand credential stuffing and why one shared password can expose every account you own.
Read article →Password Length vs Complexity
The math behind entropy explains why a long password beats a short, complicated one.
Read article →Browse all articles (45)
How to Create a Strong Password
A practical, step-by-step framework for building passwords that hold up against modern attacks.
Read article →Password Length vs Complexity
The math behind entropy explains why a long password beats a short, complicated one.
Read article →Password Entropy Explained
The formula behind every strength meter, and why a random password can out-muscle a "clever" one.
Read article →What Is Hashing?
How one-way hash functions protect passwords even in a breach, and why some algorithms are far safer than others.
Read article →Passphrases vs Passwords
The entropy math behind random word phrases versus random characters, and which to use where.
Read article →Common Password Mistakes
Ten everyday habits that quietly put your accounts at risk, with a clear fix for each one.
Read article →Why You Should Never Reuse Passwords
Understand credential stuffing and why one shared password can expose every account you own.
Read article →What to Do If Your Password Has Been Breached
The exact steps to take the moment you learn a password has been exposed.
Read article →How Hackers Crack Passwords
A clear look at brute force, dictionary attacks, and phishing — and how to defend against each one.
Read article →Base64 Encoding Explained
What Base64 actually does, and why it's often mistaken for something it isn't.
Read article →What Is a UUID?
A practical guide to the identifiers behind most modern databases and APIs.
Read article →Password Managers Explained
How encrypted vaults work, whether they're actually safe, and how to choose the right type for you.
Read article →Two-Factor Authentication Guide
Every 2FA method compared, from SMS codes to hardware keys, plus how to set it up properly.
Read article →How to Write a Password Policy
A practical framework for organizational password rules, aligned with current NIST guidance.
Read article →How to Keep Your Online Accounts Secure
A complete, layered checklist that ties passwords, 2FA, and safe habits into one system.
Read article →Password Security for Beginners
New to password security? This beginner's guide covers exactly what to do first, in plain language, with no assumed technical background.
Read article →How to Remember Strong Passwords (Without Writing Them Down)
You shouldn't have to memorize dozens of random passwords. Here's how passphrases and password managers solve the memorization problem prope
Read article →Strong Password Examples (And What Makes Them Work)
What separates a genuinely strong password from one that only looks strong? Concrete examples, explained, plus how to generate your own.
Read article →Common Password Myths, Debunked
Widely believed password advice that's actually outdated or wrong — and what current security guidance actually recommends instead.
Read article →Dictionary Attack vs Brute Force Attack
Dictionary attacks and brute force attacks both guess passwords, but very differently. Here's how each works and what actually defends again
Read article →Credential Stuffing Explained
Credential stuffing is one of the most common causes of account takeovers today. Here's exactly how it works and the one habit that stops it
Read article →Password Spraying Attacks Explained
Password spraying flips the usual attack pattern: instead of many guesses on one account, it tries one common password across many accounts.
Read article →Password Breaches Explained: How They Happen
What actually happens during a password breach, from initial compromise to your credentials showing up for sale — and why the response matte
Read article →How to Spot a Phishing Attempt
Phishing remains one of the most effective ways attackers steal passwords. Here's how to recognize an attempt before you enter your credenti
Read article →The Most Common Passwords (And Why They're Dangerous)
The same handful of predictable passwords show up on breach lists year after year. Here's why they persist, and how to check if yours is one
Read article →Multi-Factor Authentication Explained
Multi-factor authentication goes beyond passwords entirely. Here's what the different factor types actually are, and why combining them work
Read article →Biometric Authentication Explained
Fingerprints, face recognition, and other biometric methods are everywhere now. Here's how they actually work, and where they fit alongside
Read article →How to Choose a Secure Username
Usernames get far less attention than passwords, but a predictable one makes every other attack easier. Here's how to choose one properly.
Read article →What Makes a PIN Secure?
PINs are short by design, which changes the security math entirely. Here's what actually makes a PIN hard to guess, and which patterns to av
Read article →NIST Password Guidelines Explained
NIST's password guidelines reshaped how the industry thinks about password policy. Here's what SP 800-63B actually recommends, in plain lang
Read article →OWASP Password Best Practices
OWASP's password guidance focuses heavily on how applications should be built to handle credentials safely. Here's what it recommends.
Read article →What Is Password History (and Why It Matters)
Password history is the rule preventing you from reusing your last several passwords. Here's what it actually protects against, and where it
Read article →Should You Rotate Your Passwords?
Forced password rotation used to be standard advice. Current guidance says otherwise — here's the reasoning, and when changing a password st
Read article →Password Security for Small Businesses
Small businesses are frequent targets precisely because they often lack dedicated security staff. Here's a practical, achievable password se
Read article →How to Protect Your Email Account
Your email account is the recovery path for nearly everything else you own online. Here's how to lock it down properly.
Read article →Secure Banking Passwords: A Practical Guide
Banking accounts deserve extra care beyond standard password advice. Here's a practical guide to securing financial accounts specifically.
Read article →How to Secure Your Social Media Accounts
Social media accounts are common phishing and takeover targets, often used to impersonate you or reach your contacts. Here's how to lock the
Read article →Password Security on Public Wi-Fi
Public Wi-Fi introduces specific risks beyond normal password advice. Here's what actually matters when logging into accounts on a shared ne
Read article →Password Security for Gamers
Gaming accounts are frequent targets for account theft and item/currency fraud. Here's password security specifically tailored to gaming pla
Read article →Are Password Generators Safe?
Trusting a tool to generate your passwords means trusting its randomness and its privacy. Here's what to actually check before relying on on
Read article →How to Build a Secure Passphrase
A good passphrase needs genuine randomness, not just multiple words strung together. Here's exactly how to build one properly, step by step.
Read article →20 Password Security Tips You Can Use Today
Twenty specific, actionable password security tips you can put into practice today, ranked roughly by how much impact each one has.
Read article →Password Security Statistics You Should Know
What independent security research actually shows about password strength, reuse, and breaches — with real, cited figures, not vague claims.
Read article →The Complete Password Security Checklist
A complete, practical password security checklist covering accounts, tools, and habits — organized so you can work through it step by step.
Read article →The Complete Guide to Password Security
A comprehensive, single-page overview of password security — from the fundamentals to advanced topics — with links to deeper guides on every
Read article →Our editorial standards
Every guide on this site is held to the same bar before it's published.
Checked against sources
Technical claims are verified against the underlying math or against public standards like NIST and OWASP.
Kept current
Every article shows a "last updated" date, and is revisited when the guidance it describes changes.
Correctable
Found an error? We fix it directly in the article and welcome reports through our contact page.
Read our full Editorial Policy for the complete standard.
Our commitment
Flassword's tools are free to use and always will be. We'll keep publishing content that's accurate over content that's easy, keep our tools private by default rather than by exception, and keep saying plainly what we do and don't do with your data. That's the whole commitment — no fine print required.
Ready for a stronger password?
It takes less than five seconds to generate one you can trust. Prefer something memorable? Try our passphrase generator, or check an existing password with our strength checker.
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