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RegexToolBoxGenerate regular expressions automatically with AI—no need to memorize complex syntax. Describe your need and instantly get usable regex code with live match testing.
Need a regex but don't know how to write it? Keep making mistakes? Try AI-generated regex and get accurate patterns effortlessly.
Ready-to-copy regex templates: email, phone, URL, date, IP address, UUID, HTML tags, and more. One-click import into the AI editor for smart optimization.
| Use Case | Regular Expression | Example | Description |
|---|---|---|---|
| URL | [a-zA-z]+://[^\s]* | https://regextoolbox.com | Match http/https URLs |
| IP Address | ((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?) | 192.168.1.1 | Match IPv4 addresses |
| Email Address | \w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* | [email protected] | Match common email formats |
| HTML Tag | <(.*)(.*)>.*<\/\1>|<(.*) \/> | <\div>content<\/div> | Match HTML tags (including self-closing) |
| Strong Password | (?=^.{8,}$)(?=.*\d)(?=.*\W+)(?=.*[A-Z])(?=.*[a-z])(?!.*\n).*$ | A1b@5678 | 8+ chars with upper, lower, digit & symbol |
| Date (YYYY-MM-DD) | (\d{4}|\d{2})-((1[0-2])|(0?[1-9]))-(([12][0-9])|(3[01])|(0?[1-9])) | 2024-06-18 | Match yyyy-mm-dd format |
| Time (24-hour) | ((1|0?)[0-9]|2[0-3]):([0-5][0-9]) | 23:59 | Match HH:MM 24-hour format |
| Chinese Character | [\u4e00-\u9fa5] | 正则表达式 | Match any Chinese character |
| Chinese Punctuation | [\u3000-\u301e\ufe10-\ufe19\ufe30-\ufe44\ufe50-\ufe6b\uff01-\uffee] | ，。！？ | Match full-width Chinese punctuation |
| Landline Phone | (\d{4}-|\d{3}-)?(\d{8}|\d{7}) | 010-12345678 | Mainland China landline |
| Mobile Phone | 1\d{10} | 13812345678 | Mainland China 11-digit mobile |
| Postal Code | [1-9]\d{5} | 100000 | 6 digits, not starting with 0 |
| ID Card | \d{15}(\d\d[0-9xX])? | 11010519900307888X | 15 or 18-digit Chinese ID |
| Positive Integer | [0-9]*[1-9][0-9]* | 123 | Integer greater than 0 |
| Negative Integer | -[0-9]*[1-9][0-9]* | -456 | Integer less than 0 |
| Integer | -?\d+ | 0 | Zero, positive or negative integer |
| Decimal | (-?\d+)(\.\d+)? | -3.14 | Positive or negative decimal |
| Hex Color | ^#?([a-f0-9]{6}|[a-f0-9]{3})$ | #1a2b3c | Match color codes |
| Username | ^[a-z0-9_-]{3,16}$ | user_123 | 3-16 letters, digits, underscore or hyphen |
Explore the frequently asked questions about RegexToolbox, including accuracy, language support, and testing methods. Find answers to common regex challenges.
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Master regex from basic symbols to advanced matching rules through interactive tutorials and AI-assisted examples.
Explore the fusion of AI and Regex, discover the latest optimization tips and real-world cases, and make text matching & data extraction more efficient.
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UI Designer @Tech Corp
This tool saves me tons of time! Regex has always been my weak spot, but now debugging is so much easier.
Art Director @Ad Agency
Finally found an online regex tool that supports multiple languages! Clean interface, powerful features—perfect for developers.
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The real-time matching in RegexToolbox is awesome—it boosted my data-cleaning efficiency by 50%!
Just type a natural-language description and AI instantly generates a working regex for you, with live testing and visual match results.
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