Security tools

Free Strong Password Generator

Cryptographically secure passwords in one click — custom length, symbols, numbers and more. Generated server-side and never stored.

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Free · No credit card · 50 credits/day

Why use TechToolkit's password generator?

Not all password generators are equal. Here's what sets ours apart.

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Cryptographically secure

Uses PHP's random_int() backed by the OS CSPRNG — the same source used for cryptographic keys, not weak rand().

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Fully customisable

Set password length from 4 to 128 characters. Toggle uppercase, lowercase, digits and symbols independently. Generate up to 20 passwords at once.

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Never stored

Passwords are generated on the server and sent to your browser over HTTPS. We don't log, store or transmit them anywhere else.

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Guaranteed character sets

When you enable a character type, at least one character from that set is always included — then securely shuffled using a Fisher-Yates algorithm.

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One-click copy

Copy any generated password to your clipboard instantly. Generate multiple variations and pick the one you prefer.

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Completely free

No credit card required. Free accounts get 50 credits per day across all 75+ tools on TechToolkit.

How it works

Three steps, under five seconds.

Choose your options

Set the password length and pick which character types to include — uppercase, lowercase, numbers, symbols, or any combination.

Click Generate

Our server uses a cryptographically secure RNG to build your password and returns it instantly over HTTPS.

Copy and use it

Click the copy button next to any result and paste it straight into your password manager or account settings.

What makes a strong password?

At least 16 characters — length is the single biggest factor. Every extra character multiplies the search space exponentially.

Mix of uppercase, lowercase, numbers and symbols — maximises character set entropy from 26 to 94+ possible values per position.

Unique per account — one breach shouldn't expose all your accounts. Use a password manager to remember them.

Dictionary words, names or dates — easy to guess with wordlist attacks even with substitutions like p@ssw0rd.

Sequential patterns like 123456 or qwerty — the first strings any attacker tries.

Reused passwords — credential stuffing attacks take a leaked password and try it everywhere automatically.

Frequently asked questions

How long should a strong password be?

At least 16 characters. Length is the single most important factor against brute-force attacks. A 16-character random password at 94 possible characters per position has 94¹⁶ possible combinations — effectively impossible to crack with current hardware.

Is this password generator safe to use?

Yes. Passwords are generated using PHP's random_int(), which is backed by the OS cryptographically secure pseudorandom number generator (CSPRNG). They're sent to your browser over HTTPS and are never stored or logged on our servers.

What characters should a strong password include?

A strong password should include uppercase letters (A–Z), lowercase letters (a–z), numbers (0–9) and symbols (!@#$%^&*...). Mixing all four character sets maximises entropy and makes brute-force attacks exponentially harder.

Should I use a different password for every account?

Always. If one site is breached and you reuse passwords, every account sharing that password is exposed — this is called credential stuffing. Generate a unique password per account and store them in a password manager like Bitwarden or 1Password.

Related security tools

More tools to keep your accounts and data safe.

Password Strength Checker

Score any password and find out how long it would take to crack.

Hash Generator

Generate MD5, SHA-256 and SHA-512 hashes from any text.

Bcrypt Generator

Hash and verify passwords with bcrypt — choose the cost factor.

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