Convert kilobytes to bytes
Converting kilobytes to bytes is a common data task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 KB equals 1,000 B, 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 kilobytes to bytes
To convert kilobytes to bytes, multiply the number of kilobytes by 1,000. For example, 10 KB × 1,000 = 10,000 B.
B = KB × 1,000
- Write down the value in kilobytes you want to convert.
- Multiply it by 1,000 (the exact KB→B factor).
- The result is your value in bytes. Check it below with the converter or the table.
Conversion table
Common values of kilobytes and their equivalents in bytes:
| KB | B |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
About these units
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.
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.
Frequently asked questions
How do I convert kilobytes to bytes?
To convert kilobytes to bytes, multiply the number of kilobytes by 1,000. For example, 10 KB × 1,000 = 10,000 B. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many bytes are in 1 kilobyte?
1 KB = 1,000 B. That is the fixed relationship used by this converter and by international standards.
How many kilobytes are in 1 byte?
1 B = 0.001 KB. If you are converting in the opposite direction, use our Byte to Kilobyte converter for the dedicated table and FAQ.
Is the kilobytes to bytes 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 kilobyte used for?
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.