NetToolForge

Free networking utility

TCP Bandwidth-Delay Calculator

Estimate bandwidth-delay product from bitrate and RTT.

TCP Bandwidth-Delay Calculator

Estimate bandwidth-delay product from bitrate and RTT.

How this tool works

Bandwidth-delay product = throughput (bits/s) × RTT (seconds). This is the amount of data theoretically in flight at full throughput, not a guaranteed TCP window setting.

Worked example

At 100 Mbps and 50 ms RTT, BDP = 5,000,000 bits = 625,000 bytes.

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