Regex for Digits Only

Validates strings containing only numeric digits.

Pattern

/^\d+$/

Live Tester

Enter a string to test

Examples

✓ 12345

✓ 0

✓ 9876543210

✗ 12.34

✗ -5

✗ 12 34

Pattern Breakdown

^\d+ — one or more digits from start

$ — to end (nothing else)

Code Snippets

Javascript

const regex = /^\d+$/;
regex.test("12345"); // true

Python

import re
bool(re.match(r"^\d+$", "12345"))  # True

Php

preg_match('/^\d+$/', "12345"); // 1

Related Patterns

Email Address /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/ URL /^https?:\/\/(www\.)?[a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([a-zA-Z0-9()@:%_+.~#?&/=-]*)$/ Phone Number (International) /^\+?[1-9]\d{1,14}$/ Phone Number (US) /^$?[2-9]\d{2}$?[-.\s]?\d{3}[-.\s]?\d{4}$/ Phone Number (EU) /^\+?[1-9][0-9]{0,3}[\s.-]?$?[0-9]{1,5}$?[\s.-]?[0-9]{1,5}[\s.-]?[0-9]{1,5}$/ IPv4 Address /^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$/

Frequently Asked Questions

What is the regex for Digits Only?▾

The regex pattern for Digits Only is /^\d+$/. Validates strings containing only numeric digits.

How do I use the Digits Only regex in JavaScript?▾

In JavaScript you create the pattern with a regex literal or the RegExp constructor and call .test() to check a string against it. A ready-to-copy example is shown in the Code Snippets section above, alongside Python and PHP versions.

What does the Digits Only pattern match?▾

It matches strings like 12345; it rejects strings like 12.34. See the Examples section above for the full list of matching and non-matching cases.