How many kilobytes are in 1 megabyte?

1 MB equals 1000 KB. This is an exact conversion factor defined by NIST.

How do I convert megabytes to kilobytes?

Multiply the value in MB by the conversion factor. For example, 10 MB = 10000 KB. Use our calculator above for instant results.

Is the megabytes to kilobytes conversion exact?

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

Can I convert megabytes to kilobytes 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 kilobytes?

Megabytes (MB) and Kilobytes (KB) are both units of digital storage but belong to different measurement systems. 1 MB = 1000 KB. Use the converter above to switch between them instantly.

Megabytes to Kilobytes (MB → KB) — Free Online Converter

MB → KB Reference Table

MB	KB
0.001 MB	1 KB
0.002 MB	2 KB
0.003 MB	3 KB
0.004 MB	4 KB
0.005 MB	5 KB
0.006 MB	6 KB
0.007 MB	7 KB
0.008 MB	8 KB
0.009 MB	9 KB
0.01 MB	10 KB
0.02 MB	20 KB
0.03 MB	30 KB
0.04 MB	40 KB
0.05 MB	50 KB
0.06 MB	60 KB
0.07 MB	70 KB
0.08 MB	80 KB
0.09 MB	90 KB
0.1 MB	100 KB
0.2 MB	200 KB
0.3 MB	300 KB
0.4 MB	400 KB
0.5 MB	500 KB
0.6 MB	600 KB
0.7 MB	700 KB
0.8 MB	800 KB
0.9 MB	900 KB
1 MB	1000 KB
1.5 MB	1500 KB
2 MB	2000 KB
2.5 MB	2500 KB
3 MB	3000 KB
3.5 MB	3500 KB
4 MB	4000 KB
4.5 MB	4500 KB
5 MB	5000 KB
5.5 MB	5500 KB
6 MB	6000 KB
6.5 MB	6500 KB
7 MB	7000 KB
7.5 MB	7500 KB
8 MB	8000 KB
8.5 MB	8500 KB
9 MB	9000 KB
9.5 MB	9500 KB
10 MB	10000 KB
11 MB	11000 KB
12 MB	12000 KB
13 MB	13000 KB
14 MB	14000 KB
15 MB	15000 KB
16 MB	16000 KB
17 MB	17000 KB
18 MB	18000 KB
19 MB	19000 KB
20 MB	20000 KB
25 MB	25000 KB
30 MB	30000 KB
35 MB	35000 KB
40 MB	40000 KB
45 MB	45000 KB
50 MB	50000 KB
55 MB	55000 KB
60 MB	60000 KB
65 MB	65000 KB
70 MB	70000 KB
75 MB	75000 KB
80 MB	80000 KB
85 MB	85000 KB
90 MB	90000 KB
95 MB	95000 KB
100 MB	100000 KB
120 MB	120000 KB
125 MB	125000 KB
130 MB	130000 KB
140 MB	140000 KB
150 MB	150000 KB
160 MB	160000 KB
175 MB	175000 KB
180 MB	180000 KB
200 MB	200000 KB
225 MB	225000 KB
250 MB	250000 KB
275 MB	275000 KB
300 MB	300000 KB
350 MB	350000 KB
400 MB	400000 KB
450 MB	450000 KB
500 MB	500000 KB
600 MB	600000 KB
700 MB	700000 KB
750 MB	750000 KB
800 MB	800000 KB
900 MB	900000 KB
1000 MB	1000000 KB
1200 MB	1200000 KB
1250 MB	1250000 KB
1500 MB	1500000 KB
1750 MB	1750000 KB
2000 MB	2000000 KB
2500 MB	2500000 KB
3000 MB	3000000 KB
4000 MB	4000000 KB
4500 MB	4500000 KB
5000 MB	5000000 KB
6000 MB	6000000 KB
7000 MB	7000000 KB
7500 MB	7500000 KB
8000 MB	8000000 KB
9000 MB	9000000 KB
10000 MB	10000000 KB
15000 MB	15000000 KB
20000 MB	20000000 KB
25000 MB	25000000 KB
50000 MB	50000000 KB
75000 MB	75000000 KB
100000 MB	100000000 KB

Values based on NIST SP 811 conversion factors

Why Convert Megabytes to Kilobytes?

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

Digital storage conversions (MB to KB) 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 Kilobytes

To convert megabytes to kilobytes, use the following formula:

KB = MB × 1000

Example: 1 MB = 1000 KB

For example, 5 MB = 5000 KB, 10 MB = 10000 KB, and 100 MB = 100000 KB. For larger values, 1000 MB = 1000000 KB. Conversely, 1 KB = 0.001 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 Kilobyte?

1,000 bytes (decimal) or 1,024 bytes (binary).

Small files.

Megabytes → Kilobytes

Megabytes to Kilobytes Formula