🔐 Password Generator Live
📊 Result & Analysis
Click Generate Password to create a cryptographically secure password with strength analysis, crack-time estimation, and breach check.
🔐 Advanced Password Generator — 2FA, Passphrase & Breach Check
Generate cryptographically secure passwords, Diceware passphrases, and TOTP 2FA codes. Analyse strength, estimate crack time, check breaches, and export QR codes — all 100% in your browser, offline-capable.
What is a password generator? A password generator is a security tool that creates random, unpredictable passwords using cryptographically secure randomness — making them nearly impossible to guess or crack. According to the NIST Digital Identity Guidelines (SP 800-63B), organisations should enforce minimum 8-character passwords and encourage longer passphrases. As Bruce Schneier, renowned security technologist, famously wrote: "Treat your password like your toothbrush. Don't let anybody else use it, and get a new one every six months." This tool generates passwords using your browser's
crypto.getRandomValues() API — the same standard used by banks and security software. No data ever leaves your device. Built and maintained by Endeavour Marketing, a digital strategy and branding company based in Pune, India.
Choose a Tool Mode
Crack-Time Reference — What Actually Stops Attackers in 2026
Our crack-time model assumes an offline GPU attack using an RTX 4090 (~200 billion guesses/second for MD5). Server-side attacks (with rate limiting) are ~10,000x slower. Modern password hashing (Argon2id, bcrypt) adds another 10,000x+ to this time.
| Password Type | Entropy (bits) | Crack Time (RTX 4090 offline) | Verdict |
|---|---|---|---|
password123 |
~28 bits | < 1 second | Instantly broken |
| 8 lowercase letters | ~37 bits | ~2 minutes | Weak |
| 8 mixed case + digits | ~48 bits | ~12 hours | Fair |
| 10 mixed case + digits + symbols | ~65 bits | ~2,000 years | Strong |
| 12 mixed case + digits + symbols | ~78 bits | ~8 million years | Very Strong |
| 16 mixed case + digits + symbols | ~104 bits | > age of universe | Excellent |
| 6-word Diceware passphrase | ~77 bits | ~5 million years | Strong + memorable |
| 7-word Diceware passphrase | ~90 bits | > age of universe | Excellent |
NIST recommendation (SP 800-63B): Focus on length, not complexity. A 12-character password with all four character classes is stronger than a 6-character one with only symbols. For critical accounts (banking, email, cloud), use either 16+ character random passwords OR 6+ word passphrases.
Cybersecurity Insights for Businesses & Individuals in Pune, India
🏢 Why Pune businesses (Wakad, PCMC, Hinjewadi) need strong passwords in 2026
Pune's IT corridor — spanning Hinjewadi, Wakad, Baner, Kharadi, and PCMC — hosts thousands of startups, SaaS companies, and enterprise offices. According to the Indian Computer Emergency Response Team (CERT-In), ransomware attacks on Indian SMEs grew 53% year-over-year in 2025, and 81% of breaches involved weak or reused passwords. Using a password manager plus unique 16+ character passwords for each account is now a baseline security requirement for Pune businesses.
👨💻 For individual professionals & students
If you use the same password across Gmail, LinkedIn, HDFC, Zerodha, and GitHub — a breach at any one site compromises all the others. Credential stuffing attacks (using stolen passwords from one site on another) are the #1 cause of account takeovers in India. Generate a unique password for every account using this tool. Store them in Bitwarden, 1Password, or Dashlane.
🏦 For banks, fintechs & digital marketing agencies
Financial institutions and agencies managing client PPC, Google Ads, Meta Ads, and CRM access (HubSpot, Zoho, Salesforce) must enforce password hygiene across teams. Consider implementing: (1) mandatory 2FA via TOTP, (2) password managers for teams, (3) quarterly password audits, (4) phishing-resistant authentication (FIDO2/WebAuthn) where possible.
🎓 For real estate, healthcare & education sectors
Real estate portals (Magicbricks, 99acres), hospital systems (HIS, EMR), and education platforms (school ERP, LMS) are common targets. Since these systems often hold PII and financial data, password policies should require: minimum 12 characters, no dictionary words, 2FA on admin accounts, and password rotation every 90–180 days for privileged accounts.
Frequently Asked Questions
How does this password generator work?
This tool uses the Web Crypto API's crypto.getRandomValues() function — the same cryptographically secure random number generator used by banks and security software. Unlike Math.random(), which is predictable, our RNG is based on the operating system's entropy pool. Generated passwords are therefore statistically indistinguishable from true randomness and resistant to prediction attacks. Nothing is sent to any server — everything runs in your browser.
What makes a password "strong"?
Password strength is measured in entropy bits — a mathematical measure of how many guesses an attacker would need on average to crack it. A password with 80+ bits of entropy is considered very strong; 100+ bits is effectively unbreakable by any current or near-future computing technology. Strength depends on: (1) length — each additional character increases entropy exponentially; (2) character variety — using all four classes (upper, lower, digits, symbols); (3) randomness — avoiding dictionary words, patterns, and personal information.
How is crack time calculated?
Our crack-time estimation assumes an offline brute-force attack using an NVIDIA RTX 4090, which can hash ~200 billion MD5 guesses per second. Real-world attacks against properly hashed passwords (bcrypt, Argon2id) are 10,000x to 100,000x slower. Server-side attacks (with rate limiting and lockouts) are slower still. So the crack times shown here represent a worst-case scenario — real-world attacks take much longer.
What is a Diceware passphrase and why use one?
A Diceware passphrase is a password made from 5–7 randomly selected words from a 7,776-word list (like EFF's long wordlist). The randomness comes from a real physical source (originally dice, now cryptographically secure RNG). Each word adds ~12.9 bits of entropy, so: 5 words = ~64 bits, 6 words = ~77 bits, 7 words = ~90 bits. The advantage: passphrases are easier to remember than 16-character gibberish, while providing comparable security.
What is HaveIBeenPwned and how does the breach check work?
HaveIBeenPwned is a free service that aggregates data from thousands of public data breaches. Our breach check uses their k-anonymity API — meaning we send only the first 5 characters of your password's SHA-1 hash (never the password itself). The API returns all hash suffixes matching that prefix, and we locally check if your full hash appears — so your password is never transmitted. This is the same privacy model used by 1Password, Bitwarden, and other major password managers.
What is TOTP and how does the 2FA code generator work?
TOTP (Time-based One-Time Password) is the algorithm behind Google Authenticator, Authy, and Microsoft Authenticator. It generates a 6-digit code every 30 seconds based on: (1) a shared secret (usually a Base32 string), (2) the current Unix time, and (3) HMAC-SHA1. Our tool implements RFC 6238 (the TOTP standard) entirely client-side using the Web Crypto API. Your secret never leaves your device.
Why is bulk generation useful?
Bulk generation is used for: (1) IT admins resetting multiple user accounts; (2) teachers assigning unique credentials to a class; (3) event organizers distributing temporary Wi-Fi passwords; (4) developers seeding test databases with random credentials; (5) securely rotating API keys in batch. All bulk passwords use the same cryptographically secure RNG as the single-password mode.
Can I share passwords securely via QR code?
Yes — in QR-export mode, the tool generates a QR code that encodes the password (or passphrase). You can display this QR code to another trusted device for scanning, without typing. Warning: anyone with camera access to the QR code can read the password. Only use this feature on your own device or with someone you trust.
How should I store the generated passwords?
Never store passwords in plain text (email, notes, browser). Use a dedicated password manager: Bitwarden (free, open-source), 1Password (paid, premium), KeePassXC (offline, open-source), or your browser's built-in manager (Chrome, Firefox). Enable 2FA on your password manager itself — this is the single most important security step you can take.
Is this password generator safe to use?
Yes. Since everything runs in your browser and no data is transmitted to any server (except the optional HaveIBeenPwned k-anonymity API for breach check), the tool is safe. You can even use it offline — the page works without an internet connection once loaded. Open DevTools and check the Network tab: you will see no outbound requests during generation.
How often should I change my passwords?
NIST's current guidance (SP 800-63B) advises against arbitrary password rotation — forcing users to change passwords every 90 days leads to weaker passwords ("Summer2026!", "Summer2026@"). Instead, change passwords when: (1) a breach is detected on that specific service, (2) you suspect compromise, or (3) you shared the password with someone you no longer trust. Use this tool to generate a fresh, unique password in seconds.
Is this tool free?
Yes — completely free, no signup, no ads, no limits. Brought to you by Endeavour Marketing, a digital marketing, web design, and branding agency in Pune, India. If you'd like similar enterprise-grade tools built for your business, contact our team.
What other free tools does Endeavour Marketing offer?
Explore our growing library of free utility and marketing tools: ATS Resume Builder, Loan EMI Calculator, BMI Calculator, Percentage Calculator (12-in-1), Age Calculator, Schema Markup Generator, Meta Tag & SERP Preview Generator, UTM Campaign Link Builder, Email Signature Generator, QR Code Generator, and many more.