How does the regex generator work?

Type what you want to match in plain English (like 'email address' or 'phone number'). The tool searches its pattern library and returns the best matching regex with an explanation.

Can I test the regex?

Yes. Paste sample text in the test area to see matches highlighted in real time.

✓ 25+ patterns✓ Live tester✓ Free forever

Free Regex Generator Online

Describe what you want to match in plain English. Get a regex pattern with explanation and live tester.

What do you want to match?

Email Address

Matches standard email addresses like user@example.com

URL / Website

Matches HTTP and HTTPS URLs

Phone Number

Matches international phone numbers in various formats

IPv4 Address

Matches valid IPv4 addresses (0.0.0.0 - 255.255.255.255)

Date (YYYY-MM-DD)

Matches ISO date format

Date (MM/DD/YYYY)

Matches US date format

Hex Color Code

Matches 3 or 6 digit hex color codes

Credit Card Number

Matches Visa, MasterCard, Amex, and Discover card numbers

US Zip Code

Matches 5-digit and ZIP+4 formats

Indian PIN Code

Matches 6-digit Indian PIN codes

SSN

Matches US Social Security Numbers

Time (24h)

Matches 24-hour time format

Email Address

[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}

Matches standard email addresses like user@example.com

Test Pattern

0 matches found

How to use Regex Generator

Three steps. Instant results.

Step 1

Type what you want to match in plain English (e.g. 'email', 'phone number').

Step 2

Select from matching patterns — see the regex and explanation.

Step 3

Test the pattern with sample text and copy it to clipboard.

How Regex Generator works

This tool has a curated library of 25+ common regex patterns covering emails, URLs, phone numbers, dates, IP addresses, hex colors, credit cards, and more. When you type a description, it uses keyword matching to find the most relevant patterns. Each pattern includes a human-readable explanation and sample data. The live tester uses JavaScript's RegExp engine to highlight matches in real time. Everything runs in your browser.