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Security Calculator

Free security calculator to generate password. Instant results in your browser — no signup.

Also known as: Generate password, random password, strong password, Estimate password entropy, Generate random password, password generator, generate password, security computing & technology

Direct calculator

+t4Htrarfr3%%FPQ

StrengthStrong
Character sets
Exclude similar characters (i, l, 1, L, o, 0, O)

Generated in your browser — history stays on this device only.

Recently used

Tools you open will show up here on this device — with your last inputs when available.

What this result means

Free security calculator to generate password. Instant results in your browser — no signup. Uniform random picks from the selected character sets. Strength is a heuristic from length + set variety.

Assumptions

  • Rule dependency: Deterministic/random tool.

How is it calculated?

Uniform random picks from the selected character sets. Strength is a heuristic from length + set variety.

Example

Length 16 with all sets usually rates Strong.

Frequently asked questions

Stored?+

No server storage. Passwords are generated client-side only.

Exclude similar?+

Removes lookalikes like i/l/1 and o/0/O to make passwords easier to type.