How is download time calculated?

Divide the file size in bits by the speed in bits per second. A 5 GB file over a 100 Mbps line takes about 400 seconds (≈6.7 minutes) at full speed.

Why is my real download slower?

Quoted speeds are maximums. Protocol overhead, latency, Wi-Fi, disk speed and network congestion all reduce real throughput.

Download Time Calculator

Free download/transfer time calculator. Enter a file size and connection speed (Mbps, MB/s or Gbps) to estimate the time to download or upload it, in seconds, minutes and hours.

Estimate how long a file takes to transfer at a given speed.

t = \frac{size \times 8}{speed}

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