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Password Generator

Generate strong random passwords with custom rules

Reviewed: AnyCalc Editorial|2026-07-19|Editorial policy|About

What this calculator does

This password generator creates random passwords that are difficult to guess or crack. You can configure the password length, choose which character types to include (uppercase letters, lowercase letters, numbers, and symbols), and optionally exclude ambiguous characters like l, 1, I, O, and 0 that are easy to confuse when reading. The tool generates a password instantly and shows a simple strength indicator so you can see at a glance whether your settings produce a weak, fair, or strong password. Just click generate, copy the result, and store it in your password manager. All generation happens in your browser — passwords are never sent to a server.

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How to use

  1. 01
    Set password criteria
    Choose length and toggle uppercase, lowercase, numbers, and symbols.
  2. 02
    Generate password
    Click Generate to create a strong random password instantly.
  3. 03
    Copy securely
    Copy the password to your clipboard and store it in a password manager.

Password Generator FAQ

How long should a password be to be secure?▾
Security experts recommend a minimum of 12-14 characters, but 16+ characters is better. Longer passwords exponentially increase the time needed for brute force attacks. Use this tool to generate a long random password and store it in a password manager.
What does the strength indicator mean?▾
The strength indicator gives a simple rating of your generated password based on its length and character variety. Longer passwords that mix uppercase, lowercase, numbers, and symbols score higher. It is a quick visual check, not a detailed security analysis.
What are ambiguous characters and why exclude them?▾
Ambiguous characters are letters and numbers that look similar, such as lowercase L (l) and the number 1, or uppercase O and the number 0. Excluding them makes passwords easier to read and type manually when you cannot paste from a password manager.

Interpret carefully

Outputs are decision-support estimates, not a substitute for professional judgment.

  • Treating Password Generator output as a final professional diagnosis, quote, or legal determination
  • Entering approximate values when the result is sensitive to units or precision
  • Applying the FAQ answer (“How long should a password be to be secure?”) to a special case without checking assumptions

Next steps

  1. Double-check inputs against your source documents (labs, statements, specs, or notes).
  2. Confirm the method below matches your use case before you act on the number.
  3. For medical, financial, or production decisions, verify with a qualified professional.

Disclaimer: Results are informational only and do not constitute medical, financial, legal, or professional advice. Report issues: sublimernj@gmail.com

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