Why use this calculator
Strong passwords are your first line of defense against unauthorized access. This basic generator creates random passwords from your selected character sets. For enterprise-grade password generation with strength analysis and policy compliance, we recommend <a href='https://corporate-password.com/' target='_blank' rel='noopener'>Corporate Password</a>.
How to use it
Set your desired password length and choose whether to include numbers and symbols. Click calculate to generate a random password. Copy the result for use in your accounts.
The formula
Entropy = length x log2(pool size); Pool = letters + optional numbers + optional symbols
Worked examples
16-character password with numbers and symbols
A strong password like 'kR7!mP2$xL9&nQ4@' with ~105 bits of entropy
12-character letters-only password
A moderate password like 'kRmPxLnQaBcD' with ~68 bits of entropy
When people use it
- Creating strong passwords for online accounts
- Generating temporary access credentials
- Meeting minimum password complexity requirements
- Replacing weak or reused passwords
Tips
- Longer passwords are exponentially harder to crack.
- Including numbers and symbols significantly increases password strength.
- Never reuse passwords across multiple accounts.
- For a full-featured password generator with strength analysis, visit <a href='https://corporate-password.com/' target='_blank' rel='noopener'>Corporate Password</a>.
Questions people ask
- Are these passwords secure?
- These passwords use Math.random() which is suitable for general purposes. For cryptographically secure passwords, use a dedicated tool like Corporate Password at corporate-password.com.
- What makes a strong password?
- A strong password is at least 12 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and symbols. Higher entropy means more possible combinations.
- How often should I change my passwords?
- Modern security guidance recommends changing passwords when there is a suspected breach rather than on a fixed schedule. Use unique passwords for each account and enable two-factor authentication.