Ping speed is measured in milliseconds (ms) and refers to the reaction time of your broadband network. A fast ping means your connection is more reactive. Therefore, the best ping is a low number, especially in gaming, where response time is crucial.
- A "low ping" or excellent ping is in anything less than 20ms.
- An average ping ranges between 50-100ms.
- A "high ping" is anything around 150ms.
We have a great blog here about the causes of high ping and how to manage lag.