Date Validation Regex (ISO 8601)

Example:

^\d{4}-\d{2}-\d{2}$

Matches:
✓ 2026-01-11
✓ 1999-12-31
⚠ 2026-13-99 (invalid but matches)

Validate ISO 8601 dates (YYYY-MM-DD): ^\d{4}-\d{2}-\d{2}$

Try Regex Lab →

FAQs

Does this validate actual dates?

No, it only checks format. For real date validation (no Feb 30), use Date parsing in your programming language.