Bytes to KB Converter
Convert bytes (B) to kilobytes (KB) instantly using the standard 1 KB = 1024 bytes.
Convert bytes to kilobytes instantly with this free online tool. Type a value in bytes and see the equivalent in kilobytes right away, or type a kilobyte value to convert back. It uses the standard binary definition of 1 KB = 1024 bytes, and everything runs in your browser — no sign-up and no waiting.
How to convert bytes to KB
To convert bytes to kilobytes, divide the number of bytes by 1024, because one kilobyte equals 1024 bytes in the binary convention used by most operating systems. For example, 2048 bytes ÷ 1024 = 2 KB. This converter does the math for you and updates as you type.
- Enter the number of bytes in the first field.
- Read the result in kilobytes in the second field.
- Type into the KB field to convert in the other direction.
Is a kilobyte 1024 or 1000 bytes?
It depends on the convention. In the binary (IEC) convention used by Windows, Linux, and most software, 1 KB = 1024 bytes (technically a kibibyte, KiB). In the decimal (SI) convention used by storage manufacturers and networking, 1 KB = 1000 bytes. This tool uses 1024 bytes per KB, which matches how file sizes are reported on most computers.
Why use this bytes to KB converter?
- 100% free with no ads, sign-up, or limits.
- Instant, two-way conversion as you type.
- Uses the standard 1 KB = 1024 bytes.
- Runs entirely in your browser.
Frequently asked questions
How many bytes are in a kilobyte?
In the binary convention used by most operating systems, 1 kilobyte (KB) equals 1024 bytes. In the decimal convention used by some storage makers, 1 KB equals 1000 bytes.
What is the formula to convert bytes to KB?
Kilobytes = bytes ÷ 1024. For example, 5120 bytes ÷ 1024 = 5 KB.
How many KB is 2048 bytes?
2048 bytes equals exactly 2 KB when 1 KB is 1024 bytes.