How this calculator works
Enter the values for value, rate (%) and review the units before calculating.
Formula / method
Seconds = file size × 8 ÷ speed
Worked example
A 100 MB file at 50 Mbps takes about 16 seconds before protocol overhead.
Assumptions and limitations
Decimal megabytes and megabits are used, with sustained throughput equal to the entered speed.
Wi-Fi contention, protocol overhead, server limits and congestion can increase actual time.