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Bandwidth & Download Calculator

Estimate file download and upload durations, plan monthly website hosting bandwidth, and convert between data transmission units.

Presets:

Accounts for network packet framing headers

Understanding your calculation

Method, example and limitations

How the calculation works

Data-transfer time divides data size by transfer rate after matching units. Network speeds are commonly bits per second, while file sizes commonly use bytes.

Example to check

An 80 megabit payload at a sustained 10 megabits per second takes eight seconds before protocol overhead.

Before using the result

One byte is eight bits. Real throughput is lower than a nominal link rate because of overhead, congestion, latency and server limits.

Calculation methodology · Report a result that needs review