Bytes to Kilobytes
A byte is 8 bits, the basic unit for measuring file sizes and storage capacity. A kilobyte is 1,000 bytes (decimal), used by storage manufacturers and some operating systems for file sizes. 1 B equals 0.001 kB, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to data, measured here against data's base unit (bit) — every other data unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
kB = B × 0.001
B = kB × 1,000
Worked example: 5 B × 0.001 = 0.005 kB.
Conversion table
| Byte (B) | Kilobyte (kB) |
|---|---|
| 1 B | 0.001 kB |
| 2 B | 0.002 kB |
| 3 B | 0.003 kB |
| 5 B | 0.005 kB |
| 10 B | 0.01 kB |
| 20 B | 0.02 kB |
| 25 B | 0.025 kB |
| 50 B | 0.05 kB |
| 100 B | 0.1 kB |
| 250 B | 0.25 kB |
| 500 B | 0.5 kB |
| 1,000 B | 1 kB |
Frequently asked
- How many Kilobytes in a byte?
- 1 B equals 0.001 kB.
- How do I convert Bytes to Kilobytes?
- Multiply the value in B by 0.001 to get kB. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Byte and Kilobyte are both defined by a fixed conversion factor to data's base unit (bit), so the result shown is exact to the precision displayed, not an approximation.