Bandwidth Calculator
Estimates ideal file download time from file size in megabytes and connection speed in megabits per second.
How it works
Ideal download time
Formula and assumptions
Ideal seconds = file size in MB × 8 ÷ speed in Mbps. Real downloads usually take longer because of network overhead, Wi-Fi conditions, server limits and congestion.
Example
Use the sample values, calculate, and change one input at a time.
Frequently asked questions
Are results exact? Results depend on the assumptions and inputs above.
Can I use this for professional decisions? Verify critical results independently.
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Frequently asked questions
Why might a download take longer?
Protocol overhead, Wi-Fi quality, server limits and network congestion reduce real-world throughput.
What should I check before relying on the result?
Confirm the input units and assumptions described above; independently verify safety-critical, medical, financial or professional decisions.