Strong Password Regex Pattern
Enforces strong password policy: minimum 8 characters with at least one uppercase, lowercase, digit, and special character.
Live Regex Tester
Pattern Breakdown
Code Examples
JavaScript
const regex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/;
const test = "Pass@word1";
console.log(regex.test(test)); // true
// Extract matches
const matches = test.match(regex);
console.log(matches);Python
import re
pattern = r'^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$'
test = "Pass@word1"
match = re.search(pattern, test)
print(match) # Found!Go
package main
import (
"fmt"
"regexp"
)
func main() {
re := regexp.MustCompile(`^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$`)
fmt.Println(re.MatchString("Pass@word1")) // true
}Common Use Cases
Match Examples
| Input | Result |
|---|---|
| Pass@word1 | Match |
| password | No Match |
About the Strong Password Regex
Enforces strong password policy: minimum 8 characters with at least one uppercase, lowercase, digit, and special character.
Regular expressions (regex) are powerful pattern matching tools used across virtually all programming languages. The strong password pattern is classified as intermediate difficulty in the text & strings category. It works in all major programming languages.
When using this regex, always consider edge cases and test thoroughly with real-world data. Use the interactive tester above to validate the pattern against your specific inputs before deploying to production.
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Frequently Asked Questions
What is the Strong Password regex pattern?
Enforces strong password policy: minimum 8 characters with at least one uppercase, lowercase, digit, and special character.
How do I use the Strong Password regex?
Use the pattern /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/ in your code. In JavaScript: new RegExp('^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$', ''). Test it above with your own input.
What does this Strong Password regex match?
This pattern matches: "Pass@word1". It does NOT match: "password". Registration forms, password policy enforcement, security audits.
Is the Strong Password regex beginner-friendly?
This pattern is rated Intermediate. It uses some advanced features like character classes and quantifiers.
What languages support the Strong Password regex?
This pattern works in all major programming languages including JavaScript, Python, Java, C#, Go, Ruby, PHP, and more. Syntax may vary slightly between regex engines.
Can I modify the Strong Password regex for my use case?
Yes! Use the interactive tester above to modify the pattern and test with your own data. Common modifications include making it case-insensitive (add 'i' flag), matching globally (add 'g' flag), or adjusting character classes.