SSN Regex Tester
Test and validate ssn patterns with this specialized regex tester. Includes tested patterns and real-time matching.
Recommended Ssn Pattern
``regex
^\d{3}-\d{2}-\d{4}$
`
Test Examples
Valid matches:
- 123-45-6789
000-00-0000999-99-9999
Invalid (should not match):
123456789123-456-78912-345-6789
Pattern Explanation
Matches US Social Security Number format (XXX-XX-XXXX)
Alternative Patterns
1. ^\d{9}$
2. ^\d{3}[- ]?\d{2}[- ]?\d{4}$`
How to Use
1. The pattern above is preloaded—or enter your own 2. Add test strings to validate 3. See real-time match highlights 4. Copy the pattern for your code
Regex Quick Reference
| Symbol | Meaning | Example | ||
|---|---|---|---|---|
| \d | Any digit | \d{3} matches "123" | ||
| \w | Word character | \w+ matches "hello" | ||
| + | One or more | a+ matches "aaa" | ||
| * | Zero or more | a* matches "" or "aaa" | ||
| ? | Optional | colou?r matches "color" | ||
| ^ | Start of string | ^Hello | ||
| $ | End of string | world$ | ||
| [abc] | Character class | [aeiou] matches vowels | ||
| (a | b) | Alternation | (cat | dog) matches either |