Packet Loss Calculator

Packet Loss Calculator

This tool is designed to help you estimate network throughput in the presence of packet loss, using the Mathis equation—a widely recognized formula for understanding how TCP performance is impacted by packet loss and round-trip time (RTT).

Packet loss is a critical factor in network performance, as even small losses can significantly reduce throughput. Understanding why fast internet can still have packet loss can help explain why a high-speed connection may still experience network issues. You can also learn how to check packet loss to identify potential packet loss on your connection. For any questions check our frequently asked questions about packet loss

1,500 byte is the maximum transmission unit (MTU) for Ethernet networks and the average packet size on the internet is varies on usage, it can be anywhere between 20 and 1500 bytes. If you are unsure, pick 800 or try a few different sizes.
 

Packet Losses Can Vary

  • Home networks generally experience packet loss below 1%, depending on ISP quality,  and network conditions - crowded Wi-Fi environments can drive this number up.
  • Public networks, such as Wi-Fi in cafes or airports, often have higher packet loss, ranging from 2% to 5% due to congestion and interference.
Use the calculator below to better understand how packet loss impacts your network’s performance and optimize your setup for smoother data transmission.