8 bits make 1 byte. Lowercase b means bits; uppercase B means bytes.
Data & storage
Bits & Bytes Converter
Switch between Mbps, MB/s, Kbps and KB/s in one step.
What is the difference between bits and bytes?
A bit is the smallest unit of data. A byte is eight bits. Internet speed is normally quoted in bits per second (Mbps, Kbps), while file sizes and download windows use bytes (MB, KB). This converter shows all four common speed units at once.
Conversions used
- 1 byte = 8 bits
- 1 MB/s = 8 Mbps
- 1 Mbps = 1,000 Kbps
- 1 KB/s = 8 Kbps
Example
100 Mbps equals 12.5 MB/s, 100,000 Kbps and 12,500 KB/s.
An easy way to remember
Lowercase b means bits and uppercase B means bytes. If the unit has a capital B, divide by 8 to reach bits, or multiply by 8 to reach bits per second from bytes per second.
FAQ
Frequently asked questions about the Bits & Bytes Converter
How many bits are in a byte?
There are 8 bits in one byte.
How do I convert KB/s to Kbps?
Multiply by 8. A 500 KB/s download is 4,000 Kbps, or 4 Mbps.
Why do providers use bits instead of bytes?
It is a long-standing telecom convention and it also makes the advertised number look eight times bigger.
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Use this toolResults are estimates for planning. Last reviewed 20 September 2026.