What character sets are available?

Uppercase A–Z, lowercase a–z, digits 0–9, and a symbols set. At least one group is always active.

Is this suitable for passwords?

For strong passwords use the Secure Password Generator which guarantees representation from each selected group.

Random String Generator

Generate a random alphanumeric string of any length. Optionally include symbols or digits. Free, no signup.

Embed this tool on your site

<iframe src="https://abracalc.com/generator/random-string-generator/embed.html" width="340" height="320" style="border:1px solid #e4e7ec;border-radius:12px" loading="lazy"></iframe>

How to use this tool

Set your desired string length.
Toggle which character groups to include.
Click Calculate to generate a new string.
Click again to re-roll without changing settings.

Generate random strings with a fully customisable character pool. Choose uppercase, lowercase, digits, and symbols to suit your use case — API keys, test data, tokens, and more.

Frequently asked questions

What character sets are available?: Uppercase A–Z, lowercase a–z, digits 0–9, and a symbols set. At least one group is always active.
Is this suitable for passwords?: For strong passwords use the Secure Password Generator which guarantees representation from each selected group.