Utilities

Strong Password Generator

Generate cryptographically secure random passwords with configurable length, character groups and ambiguous-character filtering.

✓ No signup✓ Mobile friendly✓ Clear limitations✓ Browser-first where practical
Recent tools are remembered only on this device.
How PROFENG handles formulas, assumptions and sources →
Generate a password
Very strong · ~125 bits estimated entropy
PROFENG WORKSPACE

Turn this result into a calculation record

Carry the tool context into the PROFENG calculation-check and record workspace without implying certification or engineering approval.

Formula source and acknowledgement

Source being confirmed. PROFENG has not yet approved a published source for this exact calculator implementation, so no candidate book, paper or standard title is displayed here.

Credit for any underlying published method belongs to its original author(s) or standards body. PROFENG presents its own implementation and wording and does not imply endorsement or affiliation.

Read the PROFENG methodology for formula sourcing and automated checks →

Why use this strong password generator?

Strong Password Generator uses the browser cryptography API, guarantees inclusion from each selected character group and avoids modulo bias when choosing random characters. You can also exclude easily confused characters.

Example

Generate a 24-character password using uppercase, lowercase, numbers and symbols, then copy it directly into a password manager.

Important note

Use a password manager and a unique password for each account. Estimated entropy is a mathematical indication, not a guarantee against every attack or compromised device.

How to use it

Start with the inputs shown above, review the assumptions or options, then generate the result. Where the tool creates a file, keep the original until you have opened and checked the downloaded output.

Frequently asked questions

Is Strong Password Generator free?

Yes. The core tool is free to use without creating an account.

Do I need an account to use Strong Password Generator?

No. You can use the core Toolbox workflow without signing up.

Does Strong Password Generator work on mobile?

Yes. Toolbox is designed for modern mobile and desktop browsers, although complex file workflows can be easier on a larger screen.

EMBED

Embed this calculator

Add this calculator to another site with an iframe. The embedded view remains linked back to its canonical PROFENG page.

<iframe src="https://profeng.net/embed/strong-password-generator" title="Strong Password Generator" loading="lazy" width="100%" height="640"></iframe>
QUALITY & CORRECTIONS

QA, changelog and corrections

Last QA update: 30 September 2026.

This page is covered by publication and metadata QA only unless a tool-specific automated verification status is displayed above. No named-expert review is claimed.

Changelog

30 September 2026 – source/indexation status, metadata and correction pathway reviewed. Engineering tools display the automated verification label only when they are inside the passing Part 3 verification scope.