Diagnose websites and networks: check IPs, DNS records, SSL certificates, server uptime and open ports — all free, no installation.
Everything a student needs to stay on top of grades, deadlines and study time — free online calculators that run right in your browser with no registration.
Run your freelance business like a pro: generate professional invoices, price your time correctly, and understand taxes and fees — all with free tools.
A growing toolbox for developers: format, validate and convert code, build regex patterns, generate UUIDs and commit messages — fast, private and free.
Understand your body and plan your fitness journey with accurate, free calculators for BMI, daily calories, TDEE, body fat and hydration.
Open the What Is My IP tool to instantly see your public IPv4 and IPv6 addresses, location and ISP.
Yes. The SSL certificate checker shows the certificate issuer, expiry date and chain validity for any domain.
The DNS lookup tool queries A, AAAA, CNAME, MX, TXT and NS records for any domain and displays results instantly.
Yes. The uptime monitor pings a site and reports its current status and response time.