Convert Kilobytes to Bytes (kB to B)
1 kilobyte (kB) = 1000 bytes (B). 1 B = 0.001 kB. Example: 15 kB = 15 × 1000 = 15000 B.
Also searched as kilobytes to B, kilobytes in B, kilobytes into bytes, kB to B, kB in bytes, kB into byte, kilobyte to byte, kB to bytes converter and how many bytes in a kilobyte.
1 kB = 1000 B
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilobyte to byte converter to paste a column from Excel.
How to Convert Kilobyte to Byte
- 1 kB = 1000 B
- 1 B = 0.001 kB
- Example: convert 15 kB to B: 15 kB = 15 × 1000 B = 15000 B
Formula
B = kB × 1000
Derivation from SI units:
- 1 kB = 1000 bytes = 8000 bits (decimal, SI).
- 1 byte = 8 bits (an octet).
- 1 kB = 8000 bit ÷ 8 bit per B = 1000 B
Both units are defined exactly, so the factor is exact. Kilobyte definition: kilobyte; Byte definition: byte.
Worked examples
- A reading of 16 kB converts to 16000 B.
16 kB × 1000 = 16000 B - A value of 128 kB is 128000 B.
128 kB × 1000 = 128000 B
Kilobyte to Byte conversion table
| Kilobytes (kB) | Bytes (B) |
|---|---|
| 1 kB | 1000 B |
| 2 kB | 2000 B |
| 4 kB | 4000 B |
| 8 kB | 8000 B |
| 16 kB | 16000 B |
| 32 kB | 32000 B |
| 64 kB | 64000 B |
| 100 kB | 100000 B |
| 128 kB | 128000 B |
| 256 kB | 256000 B |
| 500 kB | 500000 B |
| 1000 kB | 1000000 B |
Where it's used
Kilobytes are used for small files, emails and web pages, while bytes appear in file and memory sizes. Both measure amount of digital information, so the conversion is a fixed factor.
Kilobyte to other data storage units
| Conversion | 1 kB equals |
|---|---|
| kilobyte to byte | 1000 B |
| kilobyte to megabyte | 0.001 MB |
| kilobyte to gigabyte | 0.000001 GB |
| kilobyte to terabyte | 1 × 10⁻⁹ TB |
| kilobyte to bit | 8000 bit |
| kilobyte to megabit | 0.008 Mbit |
| kilobyte to kibibyte | 0.9765625 KiB |
| kilobyte to mebibyte | 0.0009536743164 MiB |
Show 5 more units
| kilobyte to gibibyte | 9.313225746 × 10⁻⁷ GiB |
|---|---|
| kilobyte to kilobit | 8 kbit |
| kilobyte to gigabit | 0.000008 Gbit |
| kilobyte to petabyte | 1 × 10⁻¹² PB |
| kilobyte to tebibyte | 9.094947018 × 10⁻¹⁰ TiB |
Frequently asked questions
How many bytes are in 1 kilobyte?
1 kB = 1000 B.
How do I convert kilobytes to bytes?
Multiply the value in kB by 1000. For example, 15 kB × 1000 = 15000 B.
Is the kB to B conversion exact?
Yes. Both units are defined exactly, and 1 kB is exactly 1000 B.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Kilobytes to Bytes (kB to B). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/kilobytes-to-bytes/
IEEE
Scientific Converters, "Convert Kilobytes to Bytes (kB to B)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/kilobytes-to-bytes/