How do I convert kilobytes back to bytes?

Use the reverse converter: 1 kilobyte equals 1000 B.

Is this converter accurate?

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

4 bytes to kilobytes (4 B to KB)

Open the full bytes to kilobytes converter

Formula

To convert bytes to kilobytes, multiply the value by 0.001.

KB = B × 0.001

How to convert 4 B to KB

4 B × 0.001 = 0.004 KB

Values near 4 B

bytes → kilobytes
B	KB
1	0.0010
2	0.0020
3	0.0030
4	0.0040
5	0.0050
6	0.0060
7	0.0070
8	0.0080
9	0.0090
10	0.0100
11	0.0110
12	0.0120
13	0.0130
14	0.0140
15	0.0150
16	0.0160
17	0.0170
18	0.0180
19	0.0190
20	0.0200
21	0.0210

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

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

Frequently asked questions

How do I convert bytes to kilobytes?: To convert bytes to kilobytes, multiply the value by 0.001.
How many kilobytes are in 1 byte?: 1 byte equals 0.001 KB.
How many kilobytes are in 10 bytes?: 10 B equals 0.01 KB.
How do I convert kilobytes back to bytes?: Use the reverse converter: 1 kilobyte equals 1000 B.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.