Comprehensive regular expression reference with live tester
^
$
\\b
\\B
\\A
\\Z
.
\\w
\\W
\\d
\\D
\\s
\\S
[abc]
[^abc]
[a-z]
[A-Z]
[0-9]
*
+
?
{n}
{n,}
{n,m}
*?
+?
??
(abc)
(?:abc)
(?<name>abc)
\\1
a|b
(?=abc)
(?!abc)
(?<=abc)
(?<!abc)
g
i
m
s
u
y
[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}
https?:\/\/[^\s/$.?#].[^\s]*
\+?[\d\s\-\(\)]{7,15}
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b
#([0-9a-fA-F]{3}|[0-9a-fA-F]{6})\b
\d{4}-\d{2}-\d{2}
<([a-z]+)([^<]*?)(?:>(.*?)<\/\1>|\/>)
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$
^[a-zA-Z0-9_]{3,20}$
^\s+|\s+$
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The Regex Cheat Sheet is a free online tool available on AllToolHub that provides a comprehensive regex syntax reference with examples. It runs directly in your browser, ensuring your data stays private and secure. No registration, no downloads - just open and use.
Browse regex patterns by category or search for specific syntax. Everything is processed quickly, giving you instant results. The tool is designed to be simple and intuitive, so anyone can use it without technical knowledge.
The Regex Cheat Sheet is a free online tool on AllToolHub that provides a comprehensive regex syntax reference with examples. It is completely free to use with no signup required.
Yes, the Regex Cheat Sheet is 100% free. There are no hidden charges, no signup required, and no usage limits. Just open and start using it.
Browse regex patterns by category or search for specific syntax.
Absolutely. Most processing happens directly in your browser. We do not store, share, or sell your data. Your privacy is our priority.
Yes, the Regex Cheat Sheet is fully responsive and works perfectly on smartphones, tablets, and desktop computers. No app download needed.