Convert Megabyte to Byte (MB → B)

The megabyte is the everyday unit for image files, songs, and small documents on personal computers.

Megabyte

Byte

1,000,000

1 MB1,000,000 BNIST · BIPM accuracy

Megabyte to Byte Conversion Table

10 common values

Megabyte	Byte
1 MB	1,000,000 B
10 MB	10,000,000 B
100 MB	100,000,000 B
500 MB	500,000,000 B
1,000 MB	1,000,000,000 B
5,000 MB	5,000,000,000 B
10,000 MB	10,000,000,000 B
50,000 MB	50,000,000,000 B
100,000 MB	100,000,000,000 B
500,000 MB	500,000,000,000 B

How to Convert Megabyte to Byte Manually

Step by Step

Converting megabytes to bytes is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1
Take your value in megabytes
Start with the number of megabytes (MB) you want to convert.
2
Multiply by 1,000,000
The conversion factor from MB to B is 1,000,000. Multiply your value by this number.
3
Read the result in bytes
The result is your value in bytes (B).

Practical Examples

1 MB

equals

1,000,000 B

5 MB

equals

5,000,000 B

10 MB

equals

10,000,000 B

25 MB

equals

25,000,000 B

100 MB

equals

100,000,000 B

Formula

Multiply the value in megabytes by 1,000,000. For the reverse direction, multiply by 0.000001.

ForwardB = MB × 1,000,000

ReverseMB = B × 0.000001

Example: 10 MB × 1,000,000 = 10,000,000 B

Tips

Use these in everyday conversions

SI: 1 MB = 1000 KB = 1,000,000 B.
Binary MiB = 1,048,576 B — 4.86% larger.
HD drives, networks, SSDs: SI MB.

Common Mistakes

Avoid these

Mixing MB and MiB without noting the difference (~5%).
Confusing MB (storage) with Mb (megabit, 1/8).
Assuming 1 GB = 1000 MB always — correct in SI; binary it's 1024.

About Megabyte and Byte

What is the Megabyte?

The megabyte (MB) equals 1,000 kilobytes (1,000,000 bytes decimal, or 1,048,576 bytes binary as MiB). It is the everyday unit for image files, MP3 songs, and small documents on personal computers. A high-quality JPEG photograph is 2–10 MB, an MP3 song is 3–10 MB, a Microsoft Word document might be 0.05–5 MB, and a typical e-book is under 5 MB. Older USB flash drives and CDs hold hundreds of MB (a CD is 700 MB). Mobile data plans were originally measured in MB before gigabyte plans became standard. The megabyte relates to the kilobyte (1,000 KB = 1 MB), the gigabyte (1,000 MB = 1 GB), and the megabit (1 MB = 8 Mbit). Internet connection speeds are usually rated in Mbps (megabits per second), distinct from MBps (megabytes per second): 100 Mbps = 12.5 MBps.

Photo and image file sizes
MP3 and audio files
Small video clips

Real-world examples

MP3 song: 3–5 MB. High-res JPEG: 2–8 MB. PDF ebook: 5–50 MB.

What is the Byte?

The byte equals 8 bits and is the smallest addressable storage unit in modern computing and digital systems. Byte-sized addresses are universal in computer architectures from microcontrollers to supercomputers, making the byte the fundamental block of memory and storage. A single ASCII character is 1 byte (256 possible values), basic UTF-8 characters use 1–4 bytes, and a UTF-16 character uses 2 bytes. File sizes, RAM capacity, and disk space are all measured in bytes and their multiples. The byte relates to the bit (1 byte = 8 bits), the kilobyte (1,000 or 1,024 bytes — see decimal vs. binary), the kibibyte (1,024 bytes, the strict computing standard), and larger multiples (MB, GB, TB). Note: storage manufacturers use decimal (1 GB = 10⁹ bytes), while operating systems often use binary (1 GiB = 2³⁰ bytes), causing the famous discrepancy where a '1 TB drive' shows about 931 GB free.