UnitConvConvert
Data

Convert kilobytes to bytes

1 KB=1,000B

Use the converter below to change any kilobytes value into bytes instantly — with formula, conversion table, and real-world examples.

1,000

Conversion formula

Forward
bytes = kilobytes × 1,000
Reverse
kilobytes = bytes × 0.001

Example: 10 KB × 1,000 = 10,000 B.

About both units

From

Kilobyte

KB

The kilobyte equals 1000 bytes (SI) or 1024 bytes (binary). In drive marketing and networking, KB = 1000 B. In RAM and some OS contexts, KB = 1024 B. Use KiB when you specifically mean 1024 bytes.

Real-world: Simple text file: 1–10 KB. Webpage HTML: 20–200 KB. Email: typically under 100 KB without attachment.
Read full kilobyte reference →
To

Byte

B

The byte equals 8 bits — the basic unit of file size and memory. One byte encodes one ASCII character. All file sizes and RAM capacities are quoted in bytes and their multiples (KB, MB, GB, TB).

Real-world: An ASCII character: 1 byte. A short text message: few hundred bytes. Uncompressed photo: few MB.
Read full byte reference →

Kilobyte to Byte conversion table

Common kilobytes to bytes values for quick reference.

Kilobyte (KB)Byte (B)
1 KB1,000 B
10 KB10,000 B
100 KB100,000 B
500 KB500,000 B
1,000 KB1,000,000 B
5,000 KB5,000,000 B
10,000 KB10,000,000 B
50,000 KB50,000,000 B
100,000 KB100,000,000 B
500,000 KB500,000,000 B

Tips & common mistakes

Quick tips

  • SI: 1 KB = 1000 B. Binary: 1 KB = 1024 B (KiB).
  • Storage makers use SI; RAM typically binary.
  • Old BIOS messages may show memory as "640K" meaning KiB.

Avoid these

  • Assuming 1 KB always = 1024 B — varies by context.
  • Confusing KB (storage) with Kb (kilobit, 1/8 of KB).
  • Mixing SI and binary without noting which.

Frequently asked questions

How many bytes in a kilobyte?
One kilobyte equals 1,000 bytes.
How do I convert kilobytes to bytes?
Multiply the kilobyte value by 1,000 to get the equivalent in bytes.
What is 100 kilobytes in bytes?
100 kilobytes equals 100,000 bytes.
Is a kilobyte bigger than a byte?
Yes. 1 kilobyte equals 1,000 bytes, so one kilobyte is larger.
How to convert kilobytes to bytes without a calculator?
Multiply by 1,000 for a quick estimate; use a calculator for precise results.

Related data conversions

📊 See full comparison matrix →

More from Kilobyte

KB → b
1 = 8,000 b
KB → MB
1 = 0.001 MB
KB → GB
1 = 1.0000e-6 GB
KB → TB
1 = 1.0000e-9 TB
KB → PB
1 = 1.0000e-12 PB
KB → Mbps
1 = 0.008 Mbps

More to Byte

b → B
1 = 0.125 B
MB → B
1 = 1,000,000 B
GB → B
1 = 1,000,000,000 B
TB → B
1 = 1,000,000,000,000 B
PB → B
1 = 1.0000e15 B
Mbps → B
1 = 125,000 B

Conversions in other categories

WeightKilogram → PoundLengthKilometer → MileTemperatureCelsius → FahrenheitVolumeLiter → US GallonAreaSquare Meter → Square FootSpeedKilometer per Hour → Mile per HourEnergyKilojoule → KilocaloriePressureBar → Pound per Square Inch