Text & Web Utilities
Bandwidth Calculator
Estimate download time from file size and speed.
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Result
Download time
1 min 52 sec
Total time (seconds)
112
About the Bandwidth Calculator
How long will that download take? Enter the file size (MB) and your connection speed (Mbps) and the calculator estimates the download time. It converts bytes to bits correctly (×8), so the result reflects real transfer time on an ideal connection.
How to use the Bandwidth Calculator
- 1Enter your file size and connection speed.
- 2Read the result instantly — it recalculates as you type.
- 3Adjust the numbers to model different scenarios.
Frequently asked questions
How do I calculate download time?
Time (seconds) = file size in megabits ÷ speed in Mbps. Since a byte is 8 bits, multiply MB by 8 first. This tool handles the conversion.
Why is my real download slower?
Overhead, server limits, Wi-Fi, and congestion mean real speeds fall short of the rated maximum, so treat this as a best case.