Kilobytes (KB) to Bytes (B) Converter
The Kilobytes (KB) to Bytes (B) Converter turns your Kilobyte (KB) value into Bytes (B). Type your storage value in the input field — 1 KB = 1,000 B, calculated across both decimal (SI) and binary (IEC) standards.
Kilobytes (KB) to Bytes (B) Converter
How to Convert Kilobytes to Bytes
To convert kilobytes to bytes, multiply by 1,000. This gives you the equivalent storage size in the target unit. Learn more: Bytes to Kilobytes.
KB: A kilobyte is 1,000 bytes using the SI decimal standard. Commonly used for small file sizes. Related: KB → ZiB.
B: A byte consists of 8 bits and is the standard unit for measuring digital storage. One byte can represent 256 different values (0-255). Check out our convert GiB to B.
1 KB = 1,000 B (using SI decimal standard) — which means there are 1,000bytes in every kilobyte.
KB to B Conversion Formula
// Convert KB to B
B = KB × 1,000
// Reverse: Convert B to KB
KB = B × 0.001Kilobyte to Byte Conversion Examples
100 KB = 100,000 B
256 KB = 256,000 B
500 KB = 500,000 B
1,000 KB = 1,000,000 B
2,048 KB = 2,048,000 B
What Is a Kilobyte (KB)? Definition and Uses
A kilobyte is 1,000 bytes using the SI decimal standard. Commonly used for small file sizes. You might also need: Yib to KiB calculator.
The kilobyte is a SI decimal unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. You might also need: EB/s to ZiB/s converter.
Common uses: Text documents, small images, email attachments, configuration files Learn more: KB to ZB.
1 KB = 8,000 bits = 1,000 bytes.
The kilobyte can be abbreviated as KB; for example, 1 kilobyte can be written as 1 KB.
What Is a Byte (B)? Definition and Uses
A byte consists of 8 bits and is the standard unit for measuring digital storage. One byte can represent 256 different values (0-255). Try the Exabytes in Bytes.
The byte is a fundamental unit of digital information storage. It uses base 1,000 following the SI (International System of Units) standard. Try the converting Exabits to Exbibits.
Common uses: File sizes, memory addressing, character encoding (ASCII, UTF-8) Try the Eibps to bps conversion rate.
1 B = 8 bits = 1 bytes.
The byte can be abbreviated as B; for example, 1 byte can be written as 1 B.
Kilobyte to Byte Conversion Table
The table below shows various kilobyte measurements converted to bytes.
| Kilobytes | Bytes |
|---|---|
| 1 KB | 1,000 B |
| 2 KB | 2,000 B |
| 5 KB | 5,000 B |
| 10 KB | 10,000 B |
| 25 KB | 25,000 B |
| 50 KB | 50,000 B |
| 100 KB | 100,000 B |
| 128 KB | 128,000 B |
| 250 KB | 250,000 B |
| 256 KB | 256,000 B |
| 500 KB | 500,000 B |
| 512 KB | 512,000 B |
| 1,000 KB | 1,000,000 B |
| 1,024 KB | 1,024,000 B |
SI Decimal vs Binary: Why Two Different Standards?
When converting kilobytes to bytes, different tools may give slightly different results. This is because there are two competing standards for measuring digital storage:
| Standard | Base | 1 KB equals | Used By |
|---|---|---|---|
| SI Decimal | 1000 | 1,000 bytes | Hard drive manufacturers, macOS, network speeds |
| Binary (IEC) | 1024 | 1,024 bytes | Windows, Linux (partially), RAM specifications |
Note: Our calculator defaults to SI decimal (base 1000) to match the box label. To match Windows, toggle the standard at the top of the calculator.