Password Tool

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60 country, region and worldwide versions · Search local and English names RTL: עברית / العربية · passwords remain LTR

Minimum 16 Character Password Generator

Minimum 16 Character Password Generator: generate secure results locally in your browser with settings tuned for password policies requiring at least 16 characters.

Generated locally · never uploaded or saved

Generated passwords

Default 10 characters · 10 passwords · uppercase + lowercase + numbers

Transparent local analysis

Randomness and character distribution

This chart summarizes the current generated batch without exposing its password text. A small sample cannot prove random-number quality.

Randomness and character distribution
Sample size0
Theoretical entropy ceiling—
Uppercase0
Lowercase0
Numbers0
Symbols0
Repeated passphrase words0

The ceiling assumes the selected generator model is uniform. It is not a guarantee for a reused, human-chosen, or exposed password.

Local security workspace

Session-only generation history and export

This panel keeps only batch metadata in session storage. Password text stays in memory and is exported only if you explicitly choose it.

Warning: exported files may contain sensitive passwords. Save them only in a trusted location.

Recent local batches

Recent local batches
TimeModeCountLengthEntropy

Generate a password batch to see local metadata here.

Local security check

Password crack time estimator

See how common words, patterns, and length affect an estimated attack time.

Evaluated only in this browser. Never uploaded, logged, or saved.

Estimated time · offline fast hash (10 billion guesses/second)

Enter a password to estimate

Compare four attack scenarios
Online, rate limited (100/hour)
—
Online, no rate limit (10/second)
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Offline, slow hash (10,000/second)
—
Offline, fast hash (10 billion/second)
—

Estimate only—not a guarantee. Actual time depends on password storage, hashing cost, attacker hardware, and whether the password is reused or exposed.

About this generator

This tool is configured for password policies requiring at least 16 characters. Every result is created on this device with the Web Crypto API and is never sent to PwdGen.

This preset starts with characters mode and generates 10 independent results at a time. Every visible setting remains adjustable, and generated values are not sent to PwdGen.

When to use it

  • Length-based password policies
  • Account setup and password rotation
  • Compatibility testing

Alphabet size, entropy, and brute-force assumptions

The theoretical entropy ceiling is calculated as H = L × log2(A), where L is the generated length and A is the number of currently permitted characters.

LengthAlphabetSearch spaceEntropy ceilingAverage at 10 billion guesses/s
1656561692.9 bits14,820,896,326 years

Important: these are mathematical estimates for uniformly random values. Required positions, restricted counts, repeated passwords, dictionary patterns, leaked credentials, and real password-hashing costs can change the result substantially. The figure is not a security guarantee.

Why this length or rule matters

An exact 16-character preset is useful when a system publishes a fixed length or when teams need to test a length-specific policy. Longer, uniformly random credentials provide more guessing resistance when the destination accepts them.

Common applications

  • Length-based password policies
  • Account setup and password rotation
  • Compatibility testing

How to use the result safely

  1. Use the longest length the destination accepts
  2. Prefer 16 characters or more when practical
  3. Do not shorten a generated password manually
Important limitation: Length requirements differ by service. Confirm the current policy before saving the credential.

Generation and privacy method

The preset uses the browser Web Crypto API for random selection. Regenerating, changing settings, selecting, and copying results do not send generated credentials to PwdGen. The password crack-time estimator also runs locally and is an estimate, not a guarantee.

Minimum 16 Character Password Generator FAQ

Is a minimum 16 character password generator secure?

Security depends on whether the result is uniformly random, unique, and stored safely. Use a longer result when the destination accepts it, and never reuse it across accounts.

How long would it take to crack this minimum 16 character password generator?

Crack time depends on length, the permitted alphabet, randomness, password storage, and attack speed. The entropy section on this page states its assumptions instead of promising a guaranteed time.

Should I add symbols or increase the length?

Both can enlarge the search space, but additional unpredictable length is often easier to use. Follow the destination policy and prefer the longest accepted result.