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Bytes to Kilobytes (B to KB)

Convert bytes to kilobytes: 1 B = 0.001 KB. Exact conversion factor, formula, 18-row table and worked examples, with JSON API and MCP access.

Formula

1 B = 0.001 KB

kilobytes = bytes × 0.001 — reverse: bytes = kilobytes × 1000

The factor is derived from the SI definitions of both units (base unit: B) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.

Worked examples

1.5 B = 0.0015 KB
700 B = 0.7 KB
2048 B = 2.048 KB

Bytes to kilobytes conversion table

Bytes (B)	Kilobytes (KB)
1	0.001
2	0.002
4	0.004
8	0.008
16	0.016
32	0.032
64	0.064
100	0.1
128	0.128
256	0.256
500	0.5
512	0.512
1000	1
1024	1.024
2048	2.048
4096	4.096
8192	8.192
10000	10

FAQ

How many kilobytes are in one byte?

1 B = 0.001 KB. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

What is the formula to convert bytes to kilobytes?

Multiply the value in bytes by 0.001: kilobytes = bytes × 0.001. For example, 1.5 B = 0.0015 KB.

How do I convert kilobytes back to bytes?

Multiply by the inverse factor 1000 (bytes = kilobytes × 1000), or use the kilobytes-to-bytes page.

Related conversions

Kilobytes to bytes (reverse)
Data Storage Converter — all data storage units in one tool
Megabytes to Gigabytes
Gigabytes to Megabytes
Gigabytes to Terabytes
Terabytes to Gigabytes
Kilobytes to Megabytes
Megabytes to Kilobytes
Mebibytes to Megabytes
Megabytes to Mebibytes

Machine access

API: GET https://tttkmbb.com/api/v1/convert?value=1.5&from_unit=B&to_unit=KB
MCP: server https://tttkmbb.com/mcp, tool convert_units with {"value":1.5,"from_unit":"B","to_unit":"KB"}
Markdown: https://tttkmbb.com/conversion/bytes-to-kb.md · JSON: https://tttkmbb.com/conversion/bytes-to-kb.json (add ?value= for a result) · Units: /api/v1/units?quantity=data-storage
OpenAPI operationId: convert_units. Freshness: static. Authentication: none.