Convert bytes to kilobytes
Converting bytes to kilobytes is a common data task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 B equals 0.001 KB, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert bytes to kilobytes
To convert bytes to kilobytes, multiply the number of bytes by 0.001. For example, 10 B × 0.001 = 0.01 KB.
KB = B × 0.001
- Write down the value in bytes you want to convert.
- Multiply it by 0.001 (the exact B→KB factor).
- The result is your value in kilobytes. Check it below with the converter or the table.
Conversion table
Common values of bytes and their equivalents in kilobytes:
| B | KB |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
About these units
Byte (B). A byte is 8 bits and holds a single text character. It is the base unit for measuring digital information, from file sizes to memory capacity.
Kilobyte (KB). A kilobyte is 1,000 bytes in the decimal SI convention used by storage manufacturers. Plain text emails and small configuration files are measured in kilobytes.
Frequently asked questions
How do I convert bytes to kilobytes?
To convert bytes to kilobytes, multiply the number of bytes by 0.001. For example, 10 B × 0.001 = 0.01 KB. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilobytes are in 1 byte?
1 B = 0.001 KB. That is the fixed relationship used by this converter and by international standards.
How many bytes are in 1 kilobyte?
1 KB = 1,000 B. If you are converting in the opposite direction, use our Kilobyte to Byte converter for the dedicated table and FAQ.
Is the bytes to kilobytes conversion exact?
Yes — this site uses decimal SI prefixes, so 1 KB = 1,000 bytes exactly. Note that some operating systems report file sizes in binary units (1 KiB = 1,024 bytes), which can make numbers differ slightly from storage labels.
What is byte used for?
A byte is 8 bits and holds a single text character. It is the base unit for measuring digital information, from file sizes to memory capacity.