InputTestHub

Password Generator

Generates cryptographically strong random passwords and passphrases with full control over length and character sets.

Security Nothing uploaded No sign-up Free, unlimited
Security tool
20
Fill in the fields and press Generate.
In short Password Generator is a free online tool on inputtesthub.com that generates cryptographically strong random passwords and passphrases with full control over length and character sets. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Password Generator

  1. Set the range, count and options you need.
  2. Press Generate to produce a fresh set of values.
  3. Copy the whole set, or click any single value to copy it on its own.

About the Password Generator

The Password Generator generates cryptographically strong random passwords and passphrases with full control over length and character sets. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Creating a password for a new account you will store in a password manager.
  • Generating a passphrase you can actually type from memory.
  • Producing a batch of credentials for provisioning accounts.

Details

Randomnesscrypto.getRandomValues, the browser's CSPRNG — not Math.random, which is predictable
Entropy shownCalculated as length × log₂(alphabet size) and displayed with a crack-time estimate
Passphrase wordlist2,048 common English words, giving 11 bits of entropy per word
NetworkNo request is made when generating — check your Network tab
A 20-character random password is unmemorable by design; that is the point, and a password manager solves it. If you must remember one — your device login, your password manager master password — use a five or six word passphrase instead. It is easier to remember and harder to crack than "P@ssw0rd!23". The Diceware Passphrase Generator uses the full 7,776-word EFF list rather than the 2,048 words here, which is worth 12.9 bits a word instead of 11.

Explained in our guides

All guides

Frequently asked questions

Are there any usage caps on the Password Generator?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the utility.
Is my data uploaded anywhere?
No. The Password Generator runs entirely in your browser using JavaScript. Because the work happens locally, the utility also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What do people use the Password Generator for most?
In practice it gets used for three things: creating a password for a new account you will store in a password manager. Generating a passphrase you can actually type from memory. Producing a batch of credentials for provisioning accounts. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
What do people usually get wrong here?
A 20-character random password is unmemorable by design; that is the point, and a password manager solves it. If you must remember one — your device login, your password manager master password — use a five or six word passphrase instead. It is easier to remember and harder to crack than "P@ssw0rd!23". The Diceware Passphrase Generator uses the full 7,776-word EFF list rather than the 2,048 words here, which is worth 12.9 bits a word instead of 11.
What are the key numbers for the Password Generator?
Randomness is crypto.getRandomValues, the browser's CSPRNG — not Math.random, which is predictable. Entropy shown is Calculated as length × log₂(alphabet size) and displayed with a crack-time estimate. Passphrase wordlist is 2,048 common English words, giving 11 bits of entropy per word. These are printed on the page itself, so you do not have to take them on trust.
Is there an app version?
Yes. The page is responsive and the utility works in Chrome, Safari, Firefox, Edge and Samsung Internet on both Android and iOS. There is no app to install and nothing to sign into.

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