Bandwidth & Data tools
Capacity planning maths: transfer times, TCP window sizing, VoIP and video budgets, contention ratios and protocol overhead.
Data Unit Converter
Convert between bits, bytes and every decimal and binary multiple, so the difference between a GB and a GiB stops costing you an argument.
Download Time Calculator
Work out how long a transfer takes at a given line rate, with realistic protocol overhead applied instead of the marketing arithmetic.
Protocol Overhead Calculator
Work out how much of a link is actually payload once Ethernet framing, IP, TCP or UDP and any tunnel headers are accounted for.
TCP Throughput & BDP Calculator
Calculate the bandwidth-delay product and the maximum a single TCP stream can achieve given window size, latency and packet loss.
VoIP Bandwidth Calculator
Calculate real VoIP bandwidth per call including RTP, UDP, IP and Ethernet overhead - which is roughly double the codec rate for G.711.