Easily convert years to seconds.
Easily convert years to minutes.
Easily convert years to hours.
Easily convert years to weeks.
Easily convert years to months.
Generate passwords with custom length and custom settings.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Check if the URL is cached or not by Google.
Make sure your passwords are good enough.
Take an IP and try to look for the domain/host associated with it.
Get approximate IP details.