Bandwidth Calculator
Calculate file transfer time from size and speed, or determine the required bandwidth for a target transfer time.
AdSize of the file or data to transfer.
Your network connection speed.
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Transfer Time
1m 20s
to transfer 1 GB at 100 Mbps
Breakdown
0
Days
0
Hours
1
Minutes
20
Seconds
Total: 80 seconds
Documentation
How It Works
The calculator converts your file size to bits and your speed to bits per second, then divides to get the transfer time. In reverse mode, it divides the total bits by the target time to get the required speed.
Important: Network speeds are measured in bits (Mbps), while file sizes are measured in bytes (MB). 1 byte = 8 bits.
Formula
Time: (File Size × 8) ÷ Speed
Speed: (File Size × 8) ÷ Time
1 Byte: = 8 Bits
1 Mbps: = 1,000,000 bits/second
Last Updated: February 2026
Note: Actual transfer times may vary due to protocol overhead, latency, and congestion.
Frequently Asked Questions
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