Password Generator

Generate strong random passwords with customizable length and character options.

What is Password Generator?

A password generator creates cryptographically random strings of characters using your browser's secure random number generator. Strong passwords combine uppercase, lowercase, numbers, and symbols at 16+ characters.

Generate Password

Password Length16

464

Character Types

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

Number of Passwords

How to Generate a Strong Password

Set the length using the slider (16+ recommended).
Toggle character types: enable all four for maximum strength.
Optionally exclude ambiguous characters (l, I, 1, O, 0).
Click Generate to create a random password.
Use Copy to save it, then store it in a password manager.

Formula & Methodology

Formula

Combinations = charset_size ^ length

charset_size = number of unique characters available (e.g., 95 for full ASCII)

length = total number of characters in the password

^ = exponentiation: length as the power

Worked Example

16-character password using all character types (95 possible chars)

Charset size (A-Z + a-z + 0-9 + symbols)95 characters

Password length16 characters

Total combinations95¹⁶ ≈ 4.4 × 10³¹

At 10¹² guesses/sec~1.4 trillion years to crack

ResultEffectively uncrackable

💡

Did you know? A 16-character password with all character types has more possible combinations than there are atoms in the observable universe (≈10⁸⁰). Increasing length by just one character multiplies the search space by 95×.

Sources

NIST SP 800-63B: Digital Identity Guidelines (2017)
OWASP Authentication Cheat Sheet
Hive Systems Password Table (2024)

Password Strength Guide

WeakShort, few character types

FairMedium length, some variety

Strong12+ chars, good variety

Very Strong16+ chars, all types

Best Practices

•Length matters most: Each character doubles crack time
•Use all character types: Increases complexity exponentially
•Never reuse passwords: One breach compromises all accounts
•Use a password manager: Store unique passwords securely
•Enable 2FA: Adds critical second layer of security

Security Notice

Cryptographically Random: Uses your browser's secure random number generator (crypto.getRandomValues via Math.random).

100% Client-Side: Passwords are generated in your browser and never sent to any server.

Related Productivity Tools

Cleaning Schedule Template

Build a cleaning rota from how often each job is really needed, spread over four weeks so no day is overloaded.

Countdown Timer

Set a countdown with start/pause/reset and audio alert. Quick presets included.

Daily Standup Generator

Generate formatted standup updates with yesterday, today, and blockers for async teams.

Daily Standup Template

Write up a standup and download a Word file that opens in Google Docs, filled in.

Eisenhower Matrix

Sort tasks by urgency and importance into four action quadrants.

Employee Schedule Template

Build a weekly staff rota that totals hours, splits overtime, prices the week and shows the hours nobody is covering.

Frequently Asked Questions

A strong password is at least 12-16 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and symbols. Avoid dictionary words, personal information, and common patterns.

Humans are bad at creating random passwords. We tend to use patterns, words, and predictable substitutions. A password generator creates truly random passwords that are much harder to crack.

Ambiguous characters look similar and can cause confusion: lowercase L (l), uppercase I (I), number 1, uppercase O, and number 0. Excluding them makes passwords easier to read and type manually.

For important accounts, use at least 16 characters. For less critical accounts, 12 characters is acceptable. Longer passwords are exponentially harder to crack through brute force.

Never reuse passwords. If one account is compromised, all accounts with that password become vulnerable. Use a unique password for each account and store them in a password manager.

Generate Password

Password Length16

464

Character Types

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

Number of Passwords

How to Generate a Strong Password

Set the length using the slider (16+ recommended).
Toggle character types: enable all four for maximum strength.
Optionally exclude ambiguous characters (l, I, 1, O, 0).
Click Generate to create a random password.
Use Copy to save it, then store it in a password manager.

Formula & Methodology

Formula

Combinations = charset_size ^ length

charset_size = number of unique characters available (e.g., 95 for full ASCII)

length = total number of characters in the password

^ = exponentiation: length as the power

Worked Example

16-character password using all character types (95 possible chars)

Charset size (A-Z + a-z + 0-9 + symbols)95 characters

Password length16 characters

Total combinations95¹⁶ ≈ 4.4 × 10³¹

At 10¹² guesses/sec~1.4 trillion years to crack

ResultEffectively uncrackable

💡

Sources

NIST SP 800-63B: Digital Identity Guidelines (2017)
OWASP Authentication Cheat Sheet
Hive Systems Password Table (2024)

Password Strength Guide

WeakShort, few character types

FairMedium length, some variety

Strong12+ chars, good variety

Very Strong16+ chars, all types

Best Practices

•Length matters most: Each character doubles crack time
•Use all character types: Increases complexity exponentially
•Never reuse passwords: One breach compromises all accounts
•Use a password manager: Store unique passwords securely
•Enable 2FA: Adds critical second layer of security

Security Notice

Cryptographically Random: Uses your browser's secure random number generator (crypto.getRandomValues via Math.random).

100% Client-Side: Passwords are generated in your browser and never sent to any server.

Related Productivity Tools

Cleaning Schedule Template

Build a cleaning rota from how often each job is really needed, spread over four weeks so no day is overloaded.

Countdown Timer

Set a countdown with start/pause/reset and audio alert. Quick presets included.

Daily Standup Generator

Generate formatted standup updates with yesterday, today, and blockers for async teams.

Daily Standup Template

Write up a standup and download a Word file that opens in Google Docs, filled in.

Eisenhower Matrix

Sort tasks by urgency and importance into four action quadrants.

Employee Schedule Template

Build a weekly staff rota that totals hours, splits overtime, prices the week and shows the hours nobody is covering.

Frequently Asked Questions

Humans are bad at creating random passwords. We tend to use patterns, words, and predictable substitutions. A password generator creates truly random passwords that are much harder to crack.

Ambiguous characters look similar and can cause confusion: lowercase L (l), uppercase I (I), number 1, uppercase O, and number 0. Excluding them makes passwords easier to read and type manually.

For important accounts, use at least 16 characters. For less critical accounts, 12 characters is acceptable. Longer passwords are exponentially harder to crack through brute force.

Never reuse passwords. If one account is compromised, all accounts with that password become vulnerable. Use a unique password for each account and store them in a password manager.

Password Generator

What is Password Generator?

Generate Password

How to Generate a Strong Password

Formula & Methodology

Password Strength Guide

Best Practices

Security Notice

Related Productivity Tools

Cleaning Schedule Template

Countdown Timer

Daily Standup Generator

Daily Standup Template

Eisenhower Matrix

Employee Schedule Template

Frequently Asked Questions

What makes a password strong?

Why should I use a password generator?

What are ambiguous characters?

How long should my password be?

Should I use the same password for multiple accounts?

Password Generator

What is Password Generator?

Generate Password

How to Generate a Strong Password

Formula & Methodology

Password Strength Guide

Best Practices

Security Notice

Related Productivity Tools

Cleaning Schedule Template

Countdown Timer

Daily Standup Generator

Daily Standup Template

Eisenhower Matrix

Employee Schedule Template

Frequently Asked Questions

What makes a password strong?

Why should I use a password generator?

What are ambiguous characters?

How long should my password be?

Should I use the same password for multiple accounts?