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Date (YYYY-MM-DD)Regex — Pattern, Examples & Code

^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$

What it matches / doesn't match

Matches ✅Does not match ❌
●2024-01-15●2024-13-01
●2000-12-31●2024-01-32
●1999-06-01●24-01-15

How it works

Matches dates in ISO 8601 YYYY-MM-DD format where month is 01–12 and day is 01–31. It correctly rejects month 13 and day 32, but does not account for month-specific day limits (e.g., February 30). Use a date library for full calendar validation after this initial format check.

Code Usage

JavaScript

const regex = /^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$/;
regex.test("2024-01-15"); // true

Python

import re
pattern = re.compile(r'^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$')
bool(pattern.match("2024-01-15"))  # True

Go

import "regexp"
r := regexp.MustCompile(`^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$`)
r.MatchString("2024-01-15") // true

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FAQ

What does the Date (YYYY-MM-DD) regex pattern match?

Matches dates in ISO 8601 YYYY-MM-DD format where month is 01–12 and day is 01–31. It correctly rejects month 13 and day 32, but does not account for month-specific day limits (e.g., February 30). Use a date library for full calendar validation after this initial format check.

How do I use the Date (YYYY-MM-DD) regex in JavaScript?

const regex = /^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$/; regex.test("2024-01-15"); // true

Can I use the Date (YYYY-MM-DD) regex in Python?

Yes. import re pattern = re.compile(r'^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$') bool(pattern.match("2024-01-15")) # True