How Long to Upload 100 GB at 1 Gbps?
With a 1 Gbps upload connection, a 100 GB file takes approximately 13m 39s under ideal conditions.
Why does a 100 GB upload take 13m 39s at 1 Gbps?
Upload speed is measured in megabits per second (Mbps), while file size is measured in megabytes (MB) or gigabytes (GB). Since 1 byte = 8 bits, you divide your file's size in megabytes by your speed in megabits, then multiply by 8 to get the transfer time in seconds.
For 100 GB (102,400 MB) at 1 Gbps: 102,400 MB × 8 ÷ 1000 Mbps = 819 seconds ≈ 13m 39s
In practice, network overhead, protocol headers, and ISP throttling reduce effective throughput to about 80% of your advertised speed — making the realistic upload time closer to 17m 4s. If you're on Wi-Fi instead of Ethernet, expect even longer due to signal interference.
100 GB upload time at different speeds
Different file sizes at 1 Gbps
Upload 100 GB at other speeds
Other file sizes at 1 Gbps
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