How do I convert bytes back to kilobytes?

Use the reverse converter: 1 byte equals 0.001 KB.

Is this converter accurate?

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

4 kilobytes to bytes (4 KB to B)

Open the full kilobytes to bytes converter

Formula

To convert kilobytes to bytes, multiply the value by 1000.

B = KB × 1000

How to convert 4 KB to B

4 KB × 1000 = 4000 B

Values near 4 KB

kilobytes → bytes
KB	B
1	1000.0000
2	2000.0000
3	3000.0000
4	4000.0000
5	5000.0000
6	6000.0000
7	7000.0000
8	8000.0000
9	9000.0000
10	10000.0000
11	11000.0000
12	12000.0000
13	13000.0000
14	14000.0000
15	15000.0000
16	16000.0000
17	17000.0000
18	18000.0000
19	19000.0000
20	20000.0000
21	21000.0000

Decimal vs binary: KB, MB and GB use powers of 1,000 (SI), while KiB, MiB and GiB use powers of 1,024. Storage makers use decimal units; many operating systems and memory sizes use binary ones, which is why a "500 GB" drive shows less space.

About the units

Kilobyte (KB): 1,000 bytes in the decimal (SI) system. Often confused with the kibibyte (1,024 bytes).
Byte (B): Eight bits, the basic unit of computer storage and the size of one character in many encodings.

Frequently asked questions

How do I convert kilobytes to bytes?: To convert kilobytes to bytes, multiply the value by 1000.
How many bytes are in 1 kilobyte?: 1 kilobyte equals 1000 B.
How many bytes are in 10 kilobytes?: 10 KB equals 10000 B.
How do I convert bytes back to kilobytes?: Use the reverse converter: 1 byte equals 0.001 KB.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.