Bytes to KB Converter

Convert bytes to KB in one step. The result shows kilobytes (1,000 bytes) and kibibytes (1,024 bytes) together, so you can match whichever one your system uses.

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Kilobytes (1 KB = 1,000 bytes)
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Kibibytes (1 KiB = 1,024 bytes)
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Convert other units

How to use the Bytes to KB Converter

  1. Enter the number of Bytes. Decimals are allowed.
  2. Press Convert.
  3. Read the result in KB, with the KiB value underneath. Use Convert other units to open the full byte converter.

How it works

KB  = bytes ÷ 1,000
KiB = bytes ÷ 1,024
  • KB (kilobyte): the SI unit, 1,000 bytes
  • KiB (kibibyte): the binary unit, 1,024 bytes

Examples

  • 1,536 bytes = 1.536 KB = 1.5 KiB.
  • 1,000 bytes = 1 KB = 0.9765625 KiB.

Bytes to KB conversion table

BytesKBKiB
10.0010.0009765625
1000.10.09765625
5120.5120.5
1,00010.9765625
1,0241.0241
4,0964.0964
10,000109.765625
65,53665.53664
100,00010097.65625
1,000,0001,000976.5625

When to use kilobytes

Kilobytes suit small files: plain-text documents, short emails, icons, configuration files, and the code of a web page. When a size in bytes has four to six digits, KB is usually the easiest unit to read. Beyond about 1,000,000 bytes, megabytes are clearer.

Watch the capital letters. KB is kilobytes, while Kb or kbit is kilobits, which are 8 times smaller. Network speeds such as 512 kbps are in kilobits.

Limitations

  • Negative values give an error.
  • Results are rounded to 10 significant digits for display.
  • Older software and some operating systems write "KB" when they mean KiB. Check which one your tool uses before comparing numbers.

Frequently asked questions

How many bytes are in a kilobyte?

1,000 in the SI system and 1,024 in the binary system (called a kibibyte, KiB).

How do I convert bytes to KB?

Divide by 1,000 for KB, or by 1,024 for KiB.

Why do some tools use 1,024?

Computer memory is addressed in powers of two, so older software used 1,024. The KiB unit was introduced in 1998 to separate the two meanings.

Often used together with the Bytes to KB.