File Transfer Time Calculator
Estimate upload, download, backup, or file-copy time from file size and transfer speed, including overhead and finish time.
Last updated: August 2026
How long at other speeds?
Mbps and Gbps are bits per second; MB/s and GB/s are bytes per second. Results assume a steady average speed. Wi-Fi, drives, routers, servers, encryption, congestion, and pauses may reduce real transfer speed.