Download
Calculate download time from bandwidth and file size
How to use Download
- 1Enter the file size (e.g. 500 MB) and your download bandwidth (e.g. 100 Mbps).
- 2Mind the units: bandwidth is Mbps (megabits/s), files are MB (megabytes).
- 3Read the estimated download time and compare across bandwidths.
How is download time estimated?
time(s) = file bytes × 8 ÷ bandwidth(bps)Download time is total bits divided by transfer rate. The key trap is units: a '100 Mbps' plan is megabits per second, while files use megabytes, and 1 byte = 8 bits, so real speed is divided by 8.
Real time is also hit by protocol overhead, server throttling and Wi-Fi loss, typically 10%–30% slower than theory. The tool gives the theoretical floor to plan your wait.
Frequently asked questions
Are Mbps and MB the same?
No. Mbps is megabits per second, MB is megabytes; 1 MB = 8 Mb. Plans almost always use lowercase b (bits).
Why is real download slower?
Protocol overhead, server throttling and wireless loss add 10%–30%.
How to download faster?
Use wired, stay near the router, avoid peaks or upgrade bandwidth; the tool estimates time per bandwidth.