Internet Speed Converter
Convert between Mbps, MBps, and Gbps, and see how long a download takes. Enter a value and pick its unit - everything updates instantly.
Estimated download time
Theoretical best-case time to download common file sizes at this speed.
| File size | Download time |
|---|
Speeds are quoted in megabits (Mbps) while files are measured in megabytes, and the two differ by 8x - see the full Mbps vs MBps explainer. Not sure what your speed actually is? Run a free speed test →
Frequently Asked Questions
How do I convert Mbps to MBps?
Divide the Mbps figure by 8, because there are 8 bits in a byte. For example, 100 Mbps equals 12.5 MBps and 40 Mbps equals 5 MBps. To go the other way, multiply MBps by 8.
How long does it take to download a file at a given speed?
Divide the file size in megabytes by your speed in megabytes per second (MBps). Since speeds are usually quoted in Mbps, first divide the Mbps figure by 8 to get MBps. A 1,000 MB file on a 100 Mbps line (12.5 MBps) takes about 80 seconds in ideal conditions.
Why is the real download time longer than this calculator shows?
This tool shows the theoretical best case. Real transfers are slower because of protocol overhead, the sending server's own limits, Wi-Fi losses, and other devices sharing your connection. Expect real-world times to run somewhat above the figures here.
What is the difference between Mbps, MBps, and Gbps?
Mbps is megabits per second and is how internet plans and speed tests are quoted. MBps is megabytes per second, the unit browsers and download managers show, and equals Mbps divided by 8. Gbps is gigabits per second, equal to 1,000 Mbps.