WAN Latency Estimator - WintelGuy.com
https://wintelguy.com/wanlat.htmlEnter a number in either field, then click outside of the text box. The primary purpose of this tool is to estimate WAN latency based on the light signal propagation time over a fibre link. This tool does not take into account any additional delays that may be introduced by communication protocols, routing, encryptions, data transformation, etc.