How Long to Upload 10 GB at 100 Mbps?

With a 100 Mbps upload connection, a 10 GB file takes approximately 13m 39s under ideal conditions.

Why does a 10 GB upload take 13m 39s at 100 Mbps?

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 10 GB (10,240 MB) at 100 Mbps: 10,240 MB × 8 ÷ 100 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.

10 GB upload time at different speeds

Different file sizes at 100 Mbps

Upload 10 GB at other speeds

Other file sizes at 100 Mbps