Why do some sites limit passwords to 15 characters?

Legacy systems built before modern security standards often have database fields limited to 15 characters. This is common in older banking systems, enterprise software, and government infrastructure.

Is a 15 character password secure enough?

Yes. A random 15-character password using mixed characters has 98 bits of entropy, requiring approximately 34 million years to crack with current technology.

Should I use 15 or 16 characters?

Use 16 when possible (CISA's recommendation). Use 15 when the system won't accept longer passwords. Both are secure—the difference is marginal compared to using weak passwords.

Is this password generator secure?

Yes. All passwords are generated entirely in your browser using the Web Crypto API. No data is ever sent to our servers or stored anywhere. The code is open source and available for audit on GitHub.

15-Character Password Generator: Create Secure & Random Passwords

Strong passwords made simple. No tracking. No nonsense.

🔒 Client-Side Generated. View Source on GitHub →

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Length: 15

123264

Time to crack:

Character Sets

ABC Uppercase abc Lowercase 123 Numbers !@# Symbols

Avoid ambiguous characters (O, 0, l, I, 1)

Want a memorable passphrase instead? →

Need a different length? Try our 16 character generator.

When 15 Characters Makes Sense

CISA recommends 16 characters minimum. So why offer a 15-character generator?

Reality check: Some systems won't let you go longer.

Common 15-Character Limits

Legacy banking systems (especially credit unions)
Older enterprise software (SAP, Oracle legacy)
Some WiFi routers cap at 15
Government systems running on 20-year-old infrastructure

The Math: Is 15 Enough?

Length	Character Set	Entropy	Time to Crack
12 chars	Mixed	71 bits	3 years
15 chars	Mixed	98 bits	34 million years
16 chars	Mixed	105 bits	2 billion years

At 98 bits of entropy, a 15-character password is functionally uncrackable with current technology. You're not compromising security—you're working within system constraints.

When to Go Longer

Use 16+ characters for:

• Primary email account
• Password manager master password
• Banking and financial accounts
• Any account without MFA

Bottom line: 15 characters is secure. 16 is slightly better. Either beats the 8-character passwords 80% of people still use.

Need 16 characters instead? • How entropy works • Read our password length research

SPG

"Why we built this: Most password tools are bloated or send your data to a server. You shouldn't need a CS degree just to stay safe.

SafePasswordGenerator is built on a simple promise: No tracking. No database. No nonsense. Just browser-based math keeping you secure."

— The SPG Privacy Project Read the full story →

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Cryptographically Secure

Uses Web Crypto API's crypto.getRandomValues() for true randomness. No pseudo-random number generators.

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Client-Side Only

All password generation happens in your browser. No data is sent to our servers or stored anywhere.

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Open Source

Transparent codebase you can audit anytime. Browse the GitHub repo →

What are you securing today?

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WiFi / Router

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Memorable

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We don't collect, store, or transmit any data. Your passwords are generated locally in your browser using industry-standard cryptographic functions. No tracking, no analytics, no data collection.