File download time calculator
Network speeds use bits while file sizes use bytes, so the first conversion is a factor of eight.
GB
Mbit/s
%
Download time
800.00seconds
- Download time
- 13.33 minutes
- Download time
- 0.222 hours
- Effective speed
- 100.00 Mbit/s
Show the working
- File size = 10
- Connection speed = 100
- Speed lost to overhead = 0
- Effective speed = 100*(1-0/100) = 100
- Download time = 10*8000/100 = 800
- Download time = 800/60 = 13.3333
- Download time = 13.3333/60 = 0.222 222
Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.
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The formula
- seconds = gigabytes x 8,000 / effective megabits per second
Wi-Fi, server limits and protocol overhead can make measured throughput lower than the access-line speed.