Bytes to KB Converter

Convert bytes to kilobytes instantly. Free bytes to KB converter with binary (1024) and decimal (1000) standards for file sizes and web development.

1 KB = 1,024 bytes — used by OS, RAM, file sizes

1 B =

9.7656e-4KB

Standard: Binary (1 KB = 1,024 B)

All Units

1 B in every unit (binary)

Binary vs Decimal

Why your hard drive shows less space

1024
Binary (OS Reports)
1 bytes
1000
Decimal (Manufacturer)
1 bytes

Transfer Time

Estimated time to transfer 1 B

4G LTE (50 Mbps)< 1 ms
5G (500 Mbps)< 1 ms
Wi-Fi 5 (400 Mbps)< 1 ms
Wi-Fi 6 (1 Gbps)< 1 ms
100 Mbps Broadband< 1 ms
Gigabit Ethernet< 1 ms
USB 2.0 (480 Mbps)< 1 ms
USB 3.0 (5 Gbps)< 1 ms

How to Convert Byte to Kilobyte

Formula with a worked example (binary (1024))

To convert byte (B) to kilobyte (KB), use this formula:

KB = Bytes ÷ 1,024 (binary) or Bytes ÷ 1,000 (decimal)

Example: Convert 4,096 B to KB (binary (1024))

4,096 B = 4 KB

To convert back, use: Bytes = KB × 1,024 (binary) or KB × 1,000 (decimal)

Byte to Kilobyte Conversion Table

Quick reference (binary (1024))

BKB
1 B0.00097656 KB
2 B0.00195313 KB
5 B0.00488281 KB
10 B0.00976563 KB
25 B0.02441406 KB
50 B0.04882813 KB
100 B0.09765625 KB
250 B0.24414063 KB
500 B0.48828125 KB
1,000 B0.9765625 KB

Binary vs Decimal: Which Standard?

Why 1 B can have two different values in KB

There are two ways to define how many kilobyte are in a byte:

Binary (1024-based)

1 B = 0.00097656 KB

Used by: OS, RAM, file sizes

Decimal (1000-based)

1 B = 0.001 KB

Used by: HDD/SSD manufacturers, networks

When Do You Need B to KB?

Common scenarios where this conversion comes in handy

1

web page asset sizes

2

cookie and localStorage limits

3

network packet sizes

4

code file sizes

Frequently Asked Questions

Common questions about converting byte to kilobyte

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Last updated Mar 24, 2026