Daily planning
Password Strength Checker
Check password strength based on length, character variety, and common weak patterns.
Interactive calculator
Check password strength
Test a password against length, character variety, and common weak patterns to get a quick strength estimate and practical improvement tips.
Results
Strength
Strong
Score
85 / 100
Entropy
85 bits
Visual score
Strong- Pass: 12+ characters
- Pass: Uppercase letter
- Pass: Lowercase letter
- Pass: Number
- Pass: Symbol
- Pass: No common patterns
How to use it
- 01Type a password into the field.
- 02Review the score, strength label, and checklist of what the password includes.
- 03Use the suggestions to improve weak areas such as short length, missing symbols, or repeated patterns.
Result guide
- Longer passwords generally score better than short ones with the same character mix.
- Using uppercase, lowercase, numbers, and symbols usually improves strength.
- Common patterns and repeated characters reduce the score because they are easier to guess.
About this calculator
Password-strength pages are useful because many people know they should use stronger passwords but still need a simple way to spot weak patterns quickly.
A practical checker should not only grade a password. It should also explain what is missing so the user can improve it immediately.
Frequently asked questions
Does this send my password anywhere?
No. This tool runs in the browser and is intended only as a quick local strength check.
Why is length so important?
Because length materially increases the number of possible combinations, which makes brute-force guessing much harder.
Can a complicated short password still be weak?
Yes. Very short passwords can still be weak even if they contain a few mixed character types.
Method and limitations
This calculator uses the formula and assumptions described on this page. We do not claim independent professional review. Direct references will be listed here when they support a specific rule or data source used by this calculator.
Results are estimates for general information. Verify current rules and assumptions before making financial, tax, or health decisions.
Read our Editorial and Verification Policy →Related calculators
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