100% free · Runs 100% in your browser · No signup needed
100% client-side — your passphrase is generated inside your browser and nothing is transmitted or stored anywhere.
How strong? 3 words (33 bits) = casual use only · 4 words (44 bits) = decent for low-value accounts · 5 words (55 bits) = strong for most logins · 6+ words (66+ bits) = high security, e.g. master passwords and encryption keys. Each word adds ~11 bits of entropy (log₂ 2048).
Random passwords like "k7#Qz!9@mP2" are secure but impossible to remember — so people write them on sticky notes, defeating the whole purpose. Passphrases solve this elegantly: a short string of random words, such as "correct horse battery staple", that is both strong and human-memorable. The FistHost Passphrase Generator creates diceware-style passphrases by drawing random words with crypto.getRandomValues from a bundled word list of about 2048 words, entirely in your browser. Choose 3 to 8 words, pick your separator and casing, see the exact entropy in bits, and copy your passphrase — free, unlimited, no sign-up. It is the smarter alternative to a character-based password: passphrases trade some entropy per character for memorability, so you get security you can actually type from memory. Check any result's strength with our Password Strength Tester, add a second factor with our TOTP Generator, or hash secrets properly with our Bcrypt Hash Generator.
Every word is drawn from a list of about 2048 words, and 2048 = 211, so each word contributes exactly 11 bits of entropy. The total strength is simply entropy = number of words × 11 bits. That gives you clean, honest numbers: 5 words → 55 bits, 6 words → 66 bits. A 4-word passphrase (44 bits) is fine for casual, low-value accounts; 5 words (55 bits) is strong enough for everyday important logins; 6 or more words (66+ bits) is the right choice for high-value targets like your email, banking, or password manager master password. Because the words are picked with crypto.getRandomValues — the browser's cryptographically secure random number generator — the entropy figures are real, not marketing.
| Passphrase (this tool) | Random password | |
|---|---|---|
| Example | correct-horse-battery-staple | k7#Qz!9@mP2xL |
| Memorability | High — real words form mental images | Low — must be stored in a manager |
| Typing | Easy on any keyboard, including phones | Error-prone, especially symbols |
| Strength model | Words × 11 bits of entropy | Characters × ~6.5 bits each |
| Best for | Master passwords, Wi-Fi keys, anything you type | Site logins saved in a password manager |
The honest trade-off: passphrases give up some entropy per character in exchange for memorability. A 6-word passphrase at 66 bits is comparable in practical strength to a 12-character random password — and you can actually remember it. For accounts you never type (saved in a password manager), a long random password is still ideal; for the handful of secrets that live in your head, a passphrase wins.
This tool is 100% client-side — the words are picked in your browser using crypto.getRandomValues and nothing is ever transmitted to any server. There is no account, no logging, and no network request carrying your passphrase anywhere. That said, good security hygiene still applies: never reuse a passphrase across important accounts, store the ones you cannot memorize in a reputable password manager, and always enable two-factor authentication on your most valuable logins.
A passphrase only beats a random password if you can actually remember it — so make memorization part of the process. When you generate a passphrase, pause and build a tiny mental movie from the words: "correct-horse-battery-staple" becomes a horse correctly assembling a battery out of staples. The sillier the image, the stickier the memory. Type the passphrase five or six times in a row to build muscle memory, then test yourself an hour later and again the next day. If you chose the hyphen separator, say the words aloud as a rhythm — spoken passphrases lodge in auditory memory too. Most people find a 5-word passphrase fully memorized within a day, and a 6-word one within two or three days of normal logins. If you ever blank on it, regenerate is one click away — but resist the urge to simplify down to 3 words for important accounts just because it is easier.
The strongest setup combines both tools: use this generator to create one excellent 6-word master passphrase that you memorize, and let a reputable password manager generate and store long random passwords for every individual site. That way you only ever memorize one secret — the master passphrase — while every site gets its own unique, unguessable password. A character-based password is perfect for those per-site passwords, and our Password Strength Tester lets you audit any of them. Add our TOTP Generator for two-factor codes and you have a complete, professional-grade personal security setup built entirely from free client-side tools.
Protecting accounts is only half the battle — your website needs protection too. FistHost shared hosting starts from just $0.99/month and includes free SSL on every plan, so your visitors' logins and data travel encrypted from day one.
Grab an annual plan and FistHost includes a free domain name, giving your project a trustworthy address to match its serious security. Strong passphrases plus secure hosting — start building today.
What is a diceware passphrase?
Diceware is a method invented in 1995 for creating strong passphrases by randomly selecting words from a fixed list — originally by rolling physical dice. This tool does the same thing digitally, drawing words with the browser's cryptographically secure random number generator.
How is entropy calculated?
Each word comes from a list of about 2048 words, and log2(2048) = 11, so every word adds exactly 11 bits of entropy. Five words give 55 bits; six words give 66 bits. The tool shows the exact figure for your chosen word count.
Is a passphrase really as strong as a random password?
A 6-word passphrase (66 bits) is practically comparable to a 12-character random password, with far better memorability. The key is that the words must be truly random — never invent your own "random" words, because humans are predictably unrandom.
Does the tool send my passphrase anywhere?
No. Generation happens 100% client-side in your browser; nothing is transmitted, logged, or stored. For maximum peace of mind you can even disconnect from the internet after the page loads and it keeps working.
How many words should I use?
Follow the strength guidance: 4 words for casual accounts, 5 words for strong everyday protection, and 6 or more words for high-value accounts like email and banking.
Can I use spaces in passwords on most sites?
Most modern sites accept spaces and hyphens in passwords, which is why the tool offers separator choices. If a particular site rejects spaces, regenerate with hyphens or no separator.
Should I change my passphrase regularly?
Forced rotation is outdated advice — security experts now recommend choosing one strong, unique passphrase per important account and changing it only if you suspect compromise. A 6-word random passphrase does not expire or weaken with age, so pick it well once and let it serve you for years.
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