Easily convert days to seconds.
Easily convert days to hours.
Easily convert days to weeks.
Easily convert days to months.
Easily convert days to years.
Check if the URL is cached or not by Google.
Get details of any file type, such as the mime type or last edit date.
Get the web-host of a given website.
Parse details from user agent strings.
Make sure your passwords are good enough.
Convert pounds (lb) to kilograms (kg) with ease.