Bandwidth Calculator
Estimate how long a file takes to transfer at a given connection speed — computed in your browser
Inputs
File size and connection speed
Note: bits (Mbps) vs bytes (MB/s) differ by 8×. Sizes use SI (KB=1000) or binary (KiB=1024) as selected. Estimate excludes protocol overhead.
Transfer time
At a sustained, ideal rate
Frequently asked questions
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