How many bytes are in 1 megabyte?

1 MB equals 1000000 B. This is an exact conversion factor defined by NIST.

How do I convert megabytes to bytes?

Multiply the value in MB by the conversion factor. For example, 10 MB = 10000000 B. Use our calculator above for instant results.

Is the megabytes to bytes conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Can I convert megabytes to bytes offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between megabytes and bytes?

Megabytes (MB) and Bytes (B) are both units of digital storage but belong to different measurement systems. 1 MB = 1000000 B. Use the converter above to switch between them instantly.

Megabytes to Bytes (MB → B) — Free Online Converter

MB → B Reference Table

MB	B
0.001 MB	1000 B
0.002 MB	2000 B
0.003 MB	3000 B
0.004 MB	4000 B
0.005 MB	5000 B
0.006 MB	6000 B
0.007 MB	7000 B
0.008 MB	8000 B
0.009 MB	9000 B
0.01 MB	10000 B
0.02 MB	20000 B
0.03 MB	30000 B
0.04 MB	40000 B
0.05 MB	50000 B
0.06 MB	60000 B
0.07 MB	70000 B
0.08 MB	80000 B
0.09 MB	90000 B
0.1 MB	100000 B
0.2 MB	200000 B
0.3 MB	300000 B
0.4 MB	400000 B
0.5 MB	500000 B
0.6 MB	600000 B
0.7 MB	700000 B
0.8 MB	800000 B
0.9 MB	900000 B
1 MB	1000000 B
1.5 MB	1500000 B
2 MB	2000000 B
2.5 MB	2500000 B
3 MB	3000000 B
3.5 MB	3500000 B
4 MB	4000000 B
4.5 MB	4500000 B
5 MB	5000000 B
5.5 MB	5500000 B
6 MB	6000000 B
6.5 MB	6500000 B
7 MB	7000000 B
7.5 MB	7500000 B
8 MB	8000000 B
8.5 MB	8500000 B
9 MB	9000000 B
9.5 MB	9500000 B
10 MB	10000000 B
11 MB	11000000 B
12 MB	12000000 B
13 MB	13000000 B
14 MB	14000000 B
15 MB	15000000 B
16 MB	16000000 B
17 MB	17000000 B
18 MB	18000000 B
19 MB	19000000 B
20 MB	20000000 B
25 MB	25000000 B
30 MB	30000000 B
35 MB	35000000 B
40 MB	40000000 B
45 MB	45000000 B
50 MB	50000000 B
55 MB	55000000 B
60 MB	60000000 B
65 MB	65000000 B
70 MB	70000000 B
75 MB	75000000 B
80 MB	80000000 B
85 MB	85000000 B
90 MB	90000000 B
95 MB	95000000 B
100 MB	100000000 B
120 MB	120000000 B
125 MB	125000000 B
130 MB	130000000 B
140 MB	140000000 B
150 MB	150000000 B
160 MB	160000000 B
175 MB	175000000 B
180 MB	180000000 B
200 MB	200000000 B
225 MB	225000000 B
250 MB	250000000 B
275 MB	275000000 B
300 MB	300000000 B
350 MB	350000000 B
400 MB	400000000 B
450 MB	450000000 B
500 MB	500000000 B
600 MB	600000000 B
700 MB	700000000 B
750 MB	750000000 B
800 MB	800000000 B
900 MB	900000000 B
1000 MB	1000000000 B
1200 MB	1200000000 B
1250 MB	1250000000 B
1500 MB	1500000000 B
1750 MB	1750000000 B
2000 MB	2000000000 B
2500 MB	2500000000 B
3000 MB	3000000000 B
4000 MB	4000000000 B
4500 MB	4500000000 B
5000 MB	5000000000 B
6000 MB	6000000000 B
7000 MB	7000000000 B
7500 MB	7500000000 B
8000 MB	8000000000 B
9000 MB	9000000000 B
10000 MB	10000000000 B
15000 MB	15000000000 B
20000 MB	20000000000 B
25000 MB	25000000000 B
50000 MB	50000000000 B
75000 MB	75000000000 B
100000 MB	100000000000 B

Values based on NIST SP 811 conversion factors

Why Convert Megabytes to Bytes?

Converting between megabytes (MB) and bytes (B) is one of the most common digital storage conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert MB to B saves time and prevents errors.

Digital storage conversions (MB to B) are essential for IT professionals, content creators, and everyday computer users. Understanding the difference between bits and bytes is crucial when calculating internet speeds versus file sizes. Photographers and video editors need to convert terabytes and gigabytes to manage backups and estimate cloud storage costs. Confusion often arises between binary (1024) and decimal (1000) prefixes used by hardware manufacturers versus operating systems, leading to apparent 'missing' space on hard drives. Accurate conversion helps in planning server capacity, data transfer times, and device purchases.

How to Convert Megabytes to Bytes

To convert megabytes to bytes, use the following formula:

B = MB × 1000000

Example: 1 MB = 1000000 B

For example, 5 MB = 5000000 B, 10 MB = 10000000 B, and 100 MB = 100000000 B. For larger values, 1000 MB = 1000000000 B. Conversely, 1 B = 0.000001 MB. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

Bit vs Byte: 1 Byte = 8 Bits. Internet speed is usually bits (Mb/s), file size is Bytes (MB).
Base 10 vs Base 2: Hard drive makers use Base 10 (1KB=1000B), OS uses Base 2 (1KiB=1024B).
B vs b: MB is Megabyte, Mb is Megabit.

Pro Tips

Storage buying: A 1TB drive usually shows as ~930GB in Windows due to decimal/binary difference.
Data caps: Streaming HD video uses ~3GB/hour.
Backup rule: 3-2-1 rule: 3 copies, 2 media types, 1 offsite.

What is a Megabyte?

1,000,000 bytes.

MP3s, photos.

What is a Byte?

8 bits.

File sizes.

Megabytes → Bytes

Megabytes to Bytes Formula