The loading time of websites can be measured with many popular tools like
Alexa, and more...
According to answers like this one, load times might be considered in these categories:
Rough idea on page speed:
- 0-1seconds awesome
- 1-2seconds good
- 2-3seconds ok
- 3-4seconds poor
- 4-5seconds very poor
However, this doesn't seem to take into account the connection you're using. For example: by using a 64kbps connection, it would take a lot of time; a 512kbps again would take a lot of time; 512kbps - 8Gbps (my country's normal speed) would be good, as would a 8Gbps+ connection. So I thought page load speed depends on the user's Internet connection also.
Then what would "0-1seconds awesome" mean? What Internet connection speed is that measured with?