KBY Engineering Utilities

BDP Calculator

Calculate the Bandwidth-Delay Product to determine optimal TCP window sizes and understand how much data your network can keep in transit.

Bandwidth

Round Trip Time (RTT)

Bandwidth-Delay Product

6.10KB

In transit: 50,000 bits

In bytes: 6,250 Bytes

Recommended TCP Window: > 6.10 KB

Why this matters

The Bandwidth-Delay Product (BDP) determines the amount of data that can be in transit in the network. For a TCP connection to achieve maximum throughput, the TCP Receive Window size must be at least as large as the BDP. If the window is smaller, the sender will stall waiting for acknowledgments before the pipe is full.

System v1.0.0 — Public browser utility.

Results are theoretical maximums. Real-world throughput will be affected by protocol overhead, packet loss, and CPU limits.