How many bytes are in 1 kilobyte?

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

How do I convert kilobytes to bytes?

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

Is the kilobytes to bytes conversion exact?

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

Can I convert kilobytes 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 kilobytes and bytes?

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

Kilobytes to Bytes (KB → B) — Free Online Converter

KB → B Reference Table

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

Values based on NIST SP 811 conversion factors

Why Convert Kilobytes to Bytes?

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

Digital storage conversions (KB 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 Kilobytes to Bytes

To convert kilobytes to bytes, use the following formula:

B = KB × 1000

Example: 1 KB = 1000 B

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

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

Small files.

What is a Byte?

8 bits.

File sizes.

Kilobytes → Bytes

Kilobytes to Bytes Formula