Discovery
What's My IP?
Find your public IP address and location instantly
RDAP Lookup
Check domain registration data using the modern RDAP protocol
WHOIS Lookup
Query domain registration information via traditional WHOIS
Domain Availability
Check if a domain name is available for registration
SSL Checker
Check SSL certificate details, expiration, and covered domains
DMARC Lookup
Check DMARC email authentication policy for any domain
Utilities
Uptime Calculator
Calculate allowed downtime for different SLA uptime percentages
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa
Cron Expression Parser
Paste your cron expression and see what it means in plain English
Cron Expression Generator
Build cron expressions visually without knowing the syntax
HTTP Status Codes
Quick reference for HTTP status codes and their meanings
Bandwidth Calculator
Convert bandwidth units and calculate file transfer times
Speed Test
Test your internet download and upload speed
Why use these tools?
These free tools are designed to help developers, DevOps teams, and system administrators with common tasks. Whether you're troubleshooting network issues, planning your infrastructure SLAs, or just need quick information, these tools provide instant answers without any signup required.
All tools are completely free to use and updated regularly. Bookmark this page for quick access whenever you need them.