Bandwidth & Network Calculator

Estimate download times, convert bandwidth units, and plan data transfers

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Download Time Calculator
Estimate how long a file will take to download
Estimated Download Time
0.08 seconds
1 MB at 100 Mbps = 0.08 seconds
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Bandwidth Converter
Convert between bandwidth and data rate units
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Network Speed Comparison
Compare common connection types side-by-side
Click any bar to use that speed in the Download Calculator above
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Data Transfer Planner
Plan transfers with realistic overhead estimates
Transfer Time (raw)
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With TCP Overhead (~3-5%)
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TCP/IP headers add ~3-5% overhead to actual throughput
Data Transferred (raw)
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Usable Data (after ~4% TCP overhead)
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~4% of raw throughput is consumed by TCP/IP headers