Enter your file size
Choose the amount of data you need to download and select the appropriate unit.
Free download speed calculator
Calculate the Download Speed You Need
Enter your file size and target download time to estimate the internet speed required to complete the download.
Free to use. No sign-up. Results calculated instantly in your browser.
Download Speed Calculator
Enter your file size and desired download time.
Popular file sizes
Popular download times
Required download speed
Enter your values
How it works
The calculation is simple and transparent
Required download speed is calculated from the amount of data you want to transfer and the time available to complete it.
Set your target time
Tell the calculator how quickly you want the download to finish.
Get your required speed
The result shows the theoretical internet speed required in Mbps and MB/s.
Required Speed = File Size × 8 ÷ Download Time
File size is converted into bits.
Download time is converted into seconds.
The result gives the theoretical connection speed required to transfer the file within the selected time.