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Network Throughput Calculator

This tool estimates TCP throughput and file transfer time based on network link characteristics and TCP/IP parameters.

Link bandwidth (Mbit/s):
RTT (millisecond):
Packet loss (%):
MTU (Byte):
L1/L2 frame overhead (Byte):
TCP/IP (v4) header overhead (Byte):
TCP window (RWND) size (Byte):
File size (MByte):

Results:

Link bandwidth (Mbit/s): 10
Max achievable TCP throughput limited by TCP overhead (Mbit/s): 9.493
Bandwidth-Delay Product (BDP) (bit): 800000
Minimum required TCP RWND (Byte): 100000
Max TCP throughput limited by packet loss (Mathis et.al. formula) (Mbit/s): 146
Max TCP throughput limited by TCP RWND (Mbit/s): 1677.722
Expected maximum TCP throughput (Mbit/s): 9.493
Minimum transfer time for a 100 MByte file (d:h:m:s): 0:00:01:24