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Password Generator

Create a random password in your browser using the character sets and length you choose.

TOOLMERA / GENERATORS
Password Generator
Browser-first processing
Character-space estimate128 bits · Very strong
Random choices use the browser Web Crypto API. The entropy number is an estimate of the selected character search space, not a guarantee about account security.
Privacy-mindedBrowser-first whenever possible
Instant workflowNo setup or account required
Free core toolOpen it and get the task done
WHY TOOLMERA

Built to get the task done.

  • Web Crypto randomness
  • Custom character sets
  • Copy in one click
ABOUT THIS TOOL

Free Password Generator — Create Strong Random Passwords

Generate random passwords locally with configurable length, uppercase, lowercase, digits, symbols and ambiguous-character exclusion.

How Toolmera generates password characters

Toolmera draws random choices from the browser Web Crypto API instead of Math.random(). The generator ensures that every selected character group contributes at least one character, then securely shuffles the result.

You can include uppercase letters, lowercase letters, digits and symbols, and optionally remove visually ambiguous characters such as I, l, 1, O and 0.

Length and search-space estimates

Longer random passwords generally create a much larger possible search space. Toolmera displays a character-space entropy estimate based on the selected pool size and password length.

That number is a mathematical estimate, not a guarantee that an account is secure. Rate limits, password reuse, phishing, credential theft and the security of the service itself also matter.

HOW IT WORKS

How to use Password Generator

01

Choose the calculation

Open the tool and select the mode or options that match your task.

02

Enter the known values

Provide the inputs required for the result.

03

Review the result

Check the calculation, assumptions and supporting output shown by Toolmera.

KEEP GOING

Related tools

Useful next steps in the same workflow.

FAQ

Common questions

What randomness source does the generator use?

Toolmera uses the browser Web Crypto API for random character selection.

Can I exclude confusing characters?

Yes. Enable the ambiguity filter to remove I, l, 1, O and 0 from the active character pools.

Does selecting a character type guarantee it appears?

Yes. The current generator places at least one character from every selected group before filling and shuffling the rest.

Is the entropy badge a security guarantee?

No. It is a search-space estimate based on length and the available character pool, not a guarantee about an account or system.