Bandwidth Calculator
Calculate Transfer Time
Formula
Transfer time (seconds) = (file size in MB × 1,048,576 × 8) / (speed in Mbps × 1,000,000). Note: 1 byte = 8 bits.
Frequently Asked Questions
Why is my download slower than my connection speed?
Connection speed is measured in megabits per second (Mbps), but file sizes are in megabytes (MB). Since 1 byte = 8 bits, divide your speed by 8 to get MB/s. Network overhead also reduces effective speed.
How long to download 1 GB at 100 Mbps?
At 100 Mbps, downloading 1 GB takes approximately 82 seconds (1 min 22 sec), since the effective rate is about 12.5 MB/s.
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