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AllScienceTools
AllScienceTools
A curated collection of common Regular Expressions for validation and parsing.
Standard email validation.
/^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/Matches (123) 456-7890 or 123-456-7890.
/^(\(\d{3}\)|\d{3})[- ]?\d{3}[- ]?\d{4}$/Matches http/https URLs.
/https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/Matches standard IP address.
/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/Matches ISO 8601 dates.
/^\d{4}-\d{2}-\d{2}$/Minimum 8 chars, at least 1 letter and 1 number.
/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$/Matches #FFF or #FFFFFF.
/^#([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/Alphanumeric and hyphens only.
/^[a-z0-9]+(?:-[a-z0-9]+)*$/Mastering Regex Library is a key step in your Developer Tools journey. We built this Regex Library to be your personal study assistant—helping you solve problems step-by-step, verify your homework answers, and build confidence before exams.
This tool handles the computation, allowing you to focus on the underlying logic and problem-solving strategies. It is particularly useful for verifying hand-written work and exploring different problem scenarios instantly.
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Step-by-step logical verification
Understanding Regex Library is fundamental. Our calculator uses standard algorithms aligned with academic curriculums to ensure the results match what you need for your classes.