Megabits to Megabytes
Convert megabits to megabytes instantly. Free, fast, no signup.
How to use this tool
- Enter megabits in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your megabytes and the full breakdown beneath it.
Convert megabits to megabytes instantly. Free, fast, no signup.
Formula
Megabytes = Megabits ÷ 8
MB = Megabits × 0.125
There are 8 bits in one byte, therefore 8 megabits = 1 megabyte. Dividing megabits by 8 (multiplying by 1/8 = 0.125) gives megabytes.
How it works
Network speeds are commonly quoted in megabits per second (Mbps), while file sizes are measured in megabytes (MB). Because 1 byte = 8 bits, you divide the megabit value by 8 to obtain the equivalent megabyte value. This is why a 100 Mbps internet connection can transfer at most 12.5 MB/s.
A common mistake is assuming megabits and megabytes are equivalent or differ only by a factor of 1,024. The actual difference is a factor of 8 (bits vs. bytes), not 1,024. This causes people to dramatically overestimate download speeds — a 100 Mbps plan delivers 12.5 MB/s, not 100 MB/s.
Worked example
Convert 8 Megabits to Megabytes
- Start with 8 Megabits.
- Divide by 8 (bits per byte): 8 ÷ 8 = 1.
- Confirm: 8 × 0.125 = 1.0 MB.
8 Megabits = 1.0 MB
Common mistakes to avoid
- Forgetting to divide by 8 and treating 100 Mbps as 100 MB/s — actual throughput is 12.5 MB/s.
- Confusing megabits (networking speed) with megabytes (file size), leading to download-time estimates that are 8x too optimistic.
- Ignoring protocol overhead (TCP/IP headers, retransmissions), which reduces real-world throughput another 5-15%.
Key terms
- Megabit (Mb)
- A unit of data equal to 1,000,000 bits (or 1,048,576 bits in binary), commonly used to express network and internet connection speeds.
- Megabyte (MB)
- A unit of data equal to 8 megabits, or 1,048,576 bytes in binary convention. Used to express file sizes and storage capacity.
- Bit
- The smallest unit of digital data, with a value of 0 or 1. Eight bits constitute one byte.
- Bandwidth
- The maximum data transfer rate of a network connection, typically expressed in megabits per second (Mbps) or gigabits per second (Gbps).
Frequently asked questions
- How do I convert megabits to megabytes?
- Multiply the number of megabits by 0.125 to get megabytes.