Kilobytes to Bytes Converter
One Kilobyte equals 1000 Bytes (1 KB = 1000 B). Multiply a Kilobyte value by 1000 to get the equivalent in Bytes. Use the calculator above for your value, or check the examples and reference table below.
Formula
B = KB × 1000
Multiply the Kilobyte value by 1000 to get the equivalent value in Bytes.
Example Conversions
1 Kilobyte (KB)
1000 Byte (B)
5 Kilobyte (KB)
5000 Byte (B)
10 Kilobyte (KB)
10000 Byte (B)
25 Kilobyte (KB)
25000 Byte (B)
100 Kilobyte (KB)
100000 Byte (B)
Conversion Table
| Kilobyte (KB) | Byte (B) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
How to Convert Manually
Use these steps to convert Kilobyte values to Byte without the calculator.
- Write down the value in Kilobyte (KB) that you want to convert.
- Multiply that value by 1000.
- For example, 10 Kilobytes × 1000 = 10000 Bytes.
- Label the result as Byte (B).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilobyte and one Byte.
About Kilobyte and Byte
The kilobyte is an SI decimal data unit equal to exactly 1,000 bytes. Small documents, icons, and emails are commonly measured in kilobytes. The byte is 8 bits, the basic addressable unit of computer storage. One byte holds a single ASCII character, and all file sizes build up from it. One Kilobyte equals 1000 Bytes (1 KB = 1000 B). Kilobyte is used in text documents and emails and in icons and small images. Byte is used in file size fundamentals.
Precision and Rounding:This converter keeps SI decimal prefixes (1 KB = 1,000 bytes) separate from IEC binary prefixes (1 KiB = 1,024 bytes). Match the symbol used by your source before converting because some operating-system interfaces display binary quantities with decimal labels.
See our guide to megabits vs. megabytes if you're unsure which one your download speed is quoted in.
Data units follow NIST guidance: decimal SI prefixes use powers of 1,000, while IEC binary prefixes use powers of 1,024 (reference).
Worked Example
15Kilobytes equals15000Bytes.
15 KB × 1000 = 15000 B
FAQ
How do I convert Kilobyte to Byte?
Multiply the Kilobyte value by 1000 to get the equivalent value in Bytes.
What is the formula for Kilobyte to Byte?
The formula is B = KB × 1000.
How many Bytes are in 1 Kilobyte?
1 Kilobyte equals 1000 Bytes.
Can I convert Byte back to Kilobyte?
Yes. 1 Byte equals 0.001 Kilobytes, and the related converter can reverse the calculation.
What are common names for Kilobyte and Byte?
Kilobyte is shown as KB and may also be searched as kilobytes, kb, decimal kilobyte. Byte is shown as B and may also be searched as bytes.
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