Regex Generator & Tester
Describe what you want to match in plain English and let AI write the regular expression, then test it live against your own text with match highlighting, groups and replace. Free and private.
- Free
- Online
- No limits
- Secure
Flags
Contact us at hello@toolhub.com or support@example.org. Call +1 (555) 123-4567 between 9:00 and 17:30.
Testing runs entirely in your browser using JavaScript regex syntax. Nothing is uploaded.
Your file stays on your device — only its extracted text is sent to our AI server to generate the result.
What is Regex Generator & Tester?
Build regular expressions in plain English with this free online regex generator. Describe the pattern you need — an email, a phone number, a date, a URL — and the tool creates the matching regex for you, ready to test and copy. It's a fast regex builder and maker for developers, data analysts and anyone who works with text, with no sign-up and no limits.
How to use Regex Generator & Tester
- 1
Describe your pattern
Type in plain words what you want to match, for example "a valid email address" or "a date in YYYY-MM-DD format".
- 2
Generate the regex
The regex generator instantly creates a regular expression that matches your description.
- 3
Test and copy
Try the pattern against your own text to confirm it works, then copy the regex into your code.
Key features
- Turn plain-English descriptions into working regular expressions
- Perfect for emails, phone numbers, dates, URLs and custom patterns
- Acts as a regex builder, maker and tester in one place
- Copy-ready patterns for JavaScript, Python, PHP, Java and more
- Free online with no limits, no watermark and no account
- Works in your browser on any device
Why use Regex Generator & Tester?
Easy to use
Regex Generator & Tester was built to be as simple as possible. Add your file, get your result — there's no learning curve.
No installation
It runs right in your web browser. There is nothing to download or install on your device.
100% free
Use Regex Generator & Tester as much as you want, completely free — no account and no hidden fees.
Works everywhere
Windows, macOS, Linux, Android or iOS — if you have a browser, it simply works.
Privacy first
We respect your data. Your files are handled with privacy in mind and never kept longer than needed.
Fast & no limits
There are no artificial limits. Process your files quickly, as many times as you need.
Questions and answers
Is Regex Generator & Tester free to use?
Yes. Regex Generator & Tester is completely free, with no limits and no sign-up required.
Do I need to install any software?
No. Regex Generator & Tester works directly in your web browser, on any device.
Are my files safe?
Your file stays on your device; only the extracted text is sent to our AI server to create the result, and it is not stored.
Which devices and browsers are supported?
Regex Generator & Tester works on all modern browsers and operating systems, including Windows, macOS, Linux, Android and iOS.
Is there a limit on how many files I can use?
No. You can use Regex Generator & Tester as many times as you like, for free.
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