Easily convert days to seconds.
Easily convert days to minutes.
Easily convert days to hours.
Easily convert days to weeks.
Easily convert days to years.
Get the gravatar.com globally recognized avatar for any email.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Done
Get approximate IP details.
Check if the URL is cached or not by Google.
Make sure your passwords are good enough.