How to use
Network rates are usually expressed in bits per second while download software often shows bytes per second. The key relationship is 1 Byte = 8 bits, and decimal SI prefixes differ from binary IEC prefixes.
- Enter a transfer-rate value.
- Choose source and target units.
- Review the converted value, base bit/s rate and common equivalents.
How it is calculated
Example
100 Mbps = 12.5 MB/s theoretically because 100 million bits/s ÷ 8 = 12.5 million bytes/s.
Important notes
Common Kbps/Mbps/Gbps units here use decimal ×1000 prefixes; Ki/Mi/Gi units use binary ×1024. Converted rates are theoretical and do not subtract protocol overhead or congestion.
Frequently asked questions
What is the difference between Mbps and MB/s?
Mbps is megabits/s and MB/s is megabytes/s; eight bits make one byte.
Are MB/s and MiB/s the same?
No. MB is decimal while MiB is binary.
Is this my real download speed?
It is a theoretical unit conversion; real throughput may be lower.
Is this calculator free?
Yes. It is free to use and requires no account.