Port speed alone is not enough for server, backup, CDN and migration planning. This tool combines data size, link speed, target time and real-world efficiency, showing theoretical and effective results separately.
Network rates are commonly expressed in bits/s while file sizes use bytes. Since 1 byte equals 8 bits, a 1 Gbps link has a theoretical maximum of 125 MB/s. TCP/TLS overhead, storage, the remote endpoint, latency and other bottlenecks can reduce real throughput.
TB uses 1,000,000,000,000 bytes while TiB uses 1,099,511,627,776 bytes. The difference becomes significant for large backups and migrations.
100% is a theoretical ceiling. If you do not have measurements, 85-95% can be used as an initial estimate, but distance, packet loss, RTT, single-stream TCP, storage speed and encryption can change the result.
(data bytes × 8) ÷ effective bit/s(effective bit/s × seconds) ÷ 8(data bytes × 8) ÷ seconds ÷ efficiencyResults estimate network-layer capacity for planning. Real end-to-end performance depends on TCP stream count, RTT, packet loss, MTU, disk I/O, CPU, TLS and the capacity of the remote endpoint.
At 100% theoretical efficiency it is about 2 hours 13 minutes; at 92% efficiency it is about 2 hours 25 minutes. Real time depends on the network path and both endpoints.
At 100% continuous utilization, a 1 Gbps port can theoretically move about 324 TB of decimal data in 30 days. At 92% effective utilization, the estimate is about 298 TB.
No. Port rate is an upper bound. Single-stream TCP, latency, packet loss, storage and CPU can all reduce real throughput.
No. Mbps means megabits per second and MB/s means megabytes per second. For the theoretical conversion, divide Mbps by 8 to get MB/s.
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