Passphrase generator. Create memorable, cryptographically secure passphrases from word lists. Customizable word count, separators, and capitalization. 100% browser-based.
100% browser-based — your data never leaves your device
Generate memorable, secure passphrases from word lists.
Use the slider to select how many words your passphrase should contain (2-12). More words = stronger security.
Set a separator between words, toggle capitalization.
Click Regenerate until you find a memorable passphrase, then copy it to your clipboard.
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Passphrase Generator is a free online security tool that generate memorable, secure passphrases from word lists. It works entirely in your browser — no downloads, no installations, and no server uploads required. security engineers, backend developers, system administrators use Passphrase Generator when they need a fast, privacy-respecting way to process security data without installing additional software. It supports capabilities such as word count, custom separator, capitalize words. Additional features include entropy display. Common use cases include creating memorable but secure master passwords for password managers, generating passphrases that are easy to dictation or type on mobile, creating temporary credentials that users can easily communicate verbally. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Passphrase Generator ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Passphrase Generator is a free online security tool that helps you generate memorable, secure passphrases from word lists. Key capabilities include word count, custom separator, capitalize words. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to creating memorable but secure master passwords for password managers.
Use the slider to select how many words your passphrase should contain (2-12). More words = stronger security.
Set a separator between words, toggle capitalization.
Click Regenerate until you find a memorable passphrase, then copy it to your clipboard.
| Category | Details |
|---|---|
| Input Limits | Maximum input size: Browser memory bound |
| Key sizes: 128–4096 bits (algorithm dependent) | |
| Supported Formats | Raw text, Hex, Base64, Binary, JWT / JWS / JWE |
| Browser Engine |
|
All operations run entirely in your browser using built-in Security APIs. No server uploads, no data storage, and no third-party requests.
Passphrase Generator is ideal when you need to creating memorable but secure master passwords for password managers without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for command-line cryptographic operations, consider using OpenSSL CLI. For for enterprise secret management, HashiCorp Vault may be a better fit. Passphrase Generator fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. Passphrase Generator processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
A passphrase with 4-6 random words provides similar entropy to a 12-character random password but is much easier to remember and type.
Yes. Words are selected using the browser's Crypto.getRandomValues() API for cryptographically secure randomness.
Generate passphrases with 2 to 12 words.
Choose any separator between words — hyphen, dot, space, or custom.
Capitalize the first letter of each word for readability.
See the estimated entropy of your passphrase in bits.
Passphrase Generator is useful in a variety of scenarios across different workflows:
Creating memorable but secure master passwords for password managers
Generating passphrases that are easy to dictation or type on mobile
Creating temporary credentials that users can easily communicate verbally
A 4-word passphrase from our word list provides ~52 bits of entropy. Six words provides ~78 bits — equivalent to a strong random password.
Using a non-standard separator makes dictionary attacks slightly harder.
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