All Online Tools & Free Calculators

Convert UNIX epoch timestamps to human-readable dates and format date strings into timestamps.

Search and inspect all official IANA HTTP response status codes (1xx, 2xx, 3xx, 4xx, 5xx) with technical explanations and debugging steps.

Parse User-Agent strings to extract detailed browser family, version, operating system, and device type.

Parse URL components, paths, ports, protocols, and extract query string key-value pairs.

Parse URL query strings into structured JSON key-value objects with automatic percent-decoding and array parameter handling.

Convert color codes seamlessly between HEX, RGB, RGBA, HSL, HSLA, HSV, CMYK, and modern CSS color() spaces with a live preview.

Interactive online CSS gradient generator for linear, radial, and conic backgrounds with instant Tailwind CSS class export.

Evaluate password resilience with entropy scoring, brute-force crack time estimates, and NIST SP 800-63B security compliance checks.

Fast online cryptographic hash generator supporting SHA-256, MD5, SHA-1, SHA-512, and HMAC with custom secret keys.

Compute 256-bit SHA-256 cryptographic hash digests (64-character hexadecimal string) compliant with NIST FIPS 180-4.

Generate clean, SEO-optimized, lowercase, and hyphen-separated URL slugs from text titles with automatic accent normalization.

Instantly view, inspect, and download full-resolution thumbnail covers from any YouTube video, Shorts, or Live stream in 1080p HD, 480p, and WebP formats.

Calculate cumulative and semester Grade Point Average (GPA) across unweighted 4.0, weighted 5.0, and 10-point scales.

Determine your Western astrological Sun Sign, planetary ruler, element, and modality from your birth date.

Calculate your Pythagorean Life Path Number and discover your spiritual blueprint, innate talents, and Master Numbers.

Calculate auspicious, generating, and taboo feng shui colors by birth year and Five Elements.

Find your personal lucky feng shui numbers, generating elements, and Kua number by birth year.

Determine your 4 auspicious and 4 inauspicious Eight Mansions directions for house, kitchen, and bedhead alignment.

Evaluate partnership synergy, executive role allocation, and wealth compatibility between two birth years.

Evaluate marriage compatibility, marital synergy, and actionable Feng Shui remedies across 5 classical pillars.

Find auspicious dates for weddings, betrothals, and nuptial processions fostering lifelong harmony.

Find auspicious dates and lucky hours for business inaugurations, store openings, and commercial ventures.

Find auspicious dates and lucky hours for turning the first shovel, foundation digging, and construction kickoff.

Find auspicious dates and lucky hours for moving into a new home, lighting the inaugural stove, and blessing the hearth.