Regular Expression

Flags

g global i ignore case m multiline s dotall

Test String

🎯 Match Results

0 matches

0 groups

Enter a regex and test string above...

📋 Match Details

💡 Plain English Explanation

Enter a regex to see its explanation...

⭐ Free tier: Full regex testing & explanations

Upgrade to Pro for save/share, regex history & advanced patterns

📧 Email

[\w.+-]+@[\w-]+\.[\w.-]+

🔗 URL

https?://[^\s]+

📱 Phone

\+?[\d\s\-]{10,}

📅 Date (ISO)

\d{4}-\d{2}-\d{2}

📅 Date (US)

\d{1,2}/\d{1,2}/\d{2,4}

🌐 IPv4

\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}

🎨 Hex Color

#([0-9A-Fa-f]{3}){1,2}\b

🔐 Strong Password

^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).{8,}$

👤 Name

\b[A-Z][a-z]+\s[A-Z][a-z]+\b

📮 ZIP Code

\d{5}(-\d{4})?

Character Classes

.Any character

\dDigit [0-9]

\DNot a digit

\wWord [a-zA-Z0-9_]

\WNot a word

\sWhitespace

\SNot whitespace

Anchors

^Start of string

$End of string

\bWord boundary

Quantifiers

*0 or more

+1 or more

?0 or 1

{n}Exactly n

{n,}n or more

{n,m}Between n and m

Groups

(abc)Capture group

(?:abc)Non-capture

a|bOr

Lookaround

(?=abc)Lookahead

(?!abc)Neg lookahead

(?<=abc)Lookbehind

(?Neg lookbehind