Compare your plan with a speed shown by Steam or your browser, then estimate the time for the same file on different connections.
Mbps
MB/s
GB
Theoretical maximum
75 MB/s
Of the theoretical maximum
53.3 %
Time at your observed speed
20 minutes and 50 seconds
Same file, different connections
Connection
Ideal download time
100 Mbps
1 hour, 6 minutes and 40 seconds
300 Mbps
22 minutes and 13 seconds
600 Mbps
11 minutes and 7 seconds
1000 Mbps
6 minutes and 40 seconds
Estimates use decimal GB and constant speeds. They exclude installation, unpacking and pauses. This calculator does not measure your connection or diagnose faults.
Why does 600 Mbps not mean 600 MB/s?
A byte contains 8 bits: 600 Mbps ÷ 8 = 75 MB/s. At 40 MB/s, a download uses about 53.3% of that theoretical rate. Wi-Fi, other devices, the server and disk activity can affect the observed speed. Check whether your application displays Mbps or MB/s before comparing.
How long will a game take to download?
Use the download size shown by the launcher, which may differ from the installed size. A 50 GB download at a constant 600 Mbps takes about 11 minutes 7 seconds; at 40 MB/s it takes 20 minutes 50 seconds. Installation can take additional time.
Mbps vs MB/s: what's the difference?
Lowercase b means bit, while uppercase B means byte. Because 8 bits make 1 byte, 1 MB/s equals 8 Mbps. Internet providers usually advertise connection speeds in Mbps, while browsers, Steam and download managers often report file transfers in MB/s.
Mbps to MB/s examples
100 Mbps
100 ÷ 8 = 12.5 MB/s
300 Mbps
300 ÷ 8 = 37.5 MB/s
600 Mbps
600 ÷ 8 = 75 MB/s
1 Gbps
1 Gbps = 1,000 Mbps, so 1,000 ÷ 8 = 125 MB/s.
These figures are theoretical maximum transfer rates, not guaranteed real-world download speeds.
Why is my actual download speed lower?
The conversion gives a theoretical maximum. Actual performance can be lower because of: