How Long Does It Take to Download 10 GB at 1 Gbps?
Downloading 10 GB at 1 Gbps takes about 1 minute 26 seconds under ideal conditions — expect roughly 1 minute 47 seconds to 2 minutes 52 seconds in practice.
Why the real-world time is longer
A 10 GB file contains about 85.9 gigabits of data. At the full 1 Gbps line rate that transfers in 1 minute 26 seconds. Real download speeds, however, usually reach only 50–80% of the advertised rate because of protocol overhead, Wi-Fi conditions, network congestion, and limits on the other end of the connection — which is why a realistic estimate for this transfer is 1 minute 47 seconds to 2 minutes 52 seconds. Press Calculate above to test your own numbers.