Password creation tool
Professional password generator with configurable character groups and strength feedback
Create passwords with length control, character set selection, and estimated strength, while keeping storage and reuse decisions under your control.
Includes
- Configurable length from 4 to 64 characters
- Uppercase, lowercase, numbers, and symbols
- At least one character from every selected group
- Approximate entropy based on length and the available character pool
- Verifiable example: 16 characters with three groups receive the Strong rating under this tool's rule
- Copy password and clear fields
- Characters drawn with the browser's cryptographic generator
Password creation tool
Professional password generator with configurable character groups and strength feedback
Create passwords with length control, character set selection, and estimated strength, while keeping storage and reuse decisions under your control.
16
Adjust the total character count.Estimated strength
Strong
FAQ
Perguntas frequentes
What does this password generator do?
The tool creates random passwords with configurable character sets, length controls, and strength ratings.
Can I use generated passwords in production?
The password is drawn with the browser's cryptographic generator and is not sent to any server. For real accounts, store it in a trusted password manager, use a different password for each service, and follow your organization's security policies.
Are passwords sent to any server?
No. Generation happens in the browser and the password is not sent to a server. Still, avoid generating or copying credentials on shared computers.
How is a password assembled?
The tool chooses one character from each selected group, fills the remaining length from the combined groups, and shuffles the final sequence.
How is entropy estimated?
The estimate uses password length multiplied by the base-2 logarithm of the number of available characters in the selected groups; it is an approximation, not a cryptographic audit.
What does estimated strength mean?
It is an indication based on length and selected character groups, not a guarantee against attacks. Long, unique passwords stored in a manager remain the recommended practice.
Create long, varied passwords without making them up on the spot
The generator is for people creating test accounts, needing a temporary password, or wanting to see how length and character variety change the estimated strength.
- Set the length between 4 and 64 characters.
- Choose from uppercase, lowercase, numbers, and symbols.
- Compare the estimated strength of different combinations.
How to generate
- 1. Adjust the password length.
- 2. Check the character groups that should appear.
- 3. Review the estimated strength and the generated password.
- 4. Copy the password and store it in a password manager.
Length matters more than complexity
The tool uses the browser's cryptographic generator to draw the characters: it guarantees at least one from each checked group, fills the rest from the combined set, and shuffles the result.
Length
Each extra character multiplies the possible combinations.
A 16-character password is far harder to guess than an 8-character one.
Groups
More groups mean a larger character set.
With all four groups checked, each position has 88 options.
Estimated strength
Calculated from the length and the chosen groups.
It is an estimate, not a test against real attacks.
A password for general use
With 16 characters and uppercase, lowercase, and numbers checked, the tool's rule rates the password as strong.
Length
16 characters
Groups
Uppercase, lowercase, and numbers
Estimated strength
Strong
Each click generates a different password, so the example shows the settings, not the password.
Good practices still apply
A strong password only protects you if it is unique and well stored.
- Use a different password for each service.
- Store passwords in a manager, not in notes or messages.
- Generating the password is only one part: also turn on two-step verification when the service offers it.
Do not reuse the password
If the same password is used on several services, a single leak compromises all of them.