How Long to Upload 100 GB at 5 Mbps?

With a 5 Mbps upload connection, a 100 GB file takes approximately 1d 21h 30m under ideal conditions.

Why does a 100 GB upload take 1d 21h 30m at 5 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 100 GB (102,400 MB) at 5 Mbps: 102,400 MB × 8 ÷ 5 Mbps = 163,840 seconds ≈ 1d 21h 30m

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 2d 8h 53m. 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 5 Mbps

Upload 100 GB at other speeds

Other file sizes at 5 Mbps