Pingdom is a website monitoring service that offers free speed tests.
Pingdom will display the load time of your web page and also provide you with a performance grade based on several important factors.
If you want Pingdom to continuously monitor your website’s uptime, speed, and performance they offer monthly plans starting at $15/month (or $12/month when paid annually).
WebPagetest is a free online tool that displays the load time of your web page as well as 6 different performance grades.
If you click on “Page Speed” after running a test you’ll find an overall grade as well as a checklist of some suggested changes (in order of importance) for increasing your website’s speed.
One cool feature of WebPagetest is the ability to select the country from which to run your test. This can be used to track how your speeds vary across the world.