Byte Conversion Calculator

Calculator Supports bits bytes SI (1000) and IEC (1024) units

SI: KB MB GB TB PB IEC: KiB MiB GiB TiB PiB

Unit	Abbrev.	Value

Bar chart of converted values — enable log scale to compare across magnitudes.

Log scale

Example Data Table Common sizes pre-filled and computed using the same engine

Example	Input	Unit	Bytes (decimal)	KB	MB	GB	KiB	MiB	GiB

Formulas Used

Conversions are anchored on byte (B). A bit (b) is 1/8 of a byte. Decimal prefixes (SI) use powers of 1000; binary prefixes (IEC) use powers of 1024.

SI (Decimal, base 1000)

KB = 1000¹ B
MB = 1000² B
GB = 1000³ B
TB = 1000⁴ B
PB = 1000⁵ B

To convert any x bytes to MB: MB = x / 1000^2

IEC (Binary, base 1024)

KiB = 1024¹ B
MiB = 1024² B
GiB = 1024³ B
TiB = 1024⁴ B
PiB = 1024⁵ B

To convert any x bytes to MiB: MiB = x / 1024^2

General method:

Normalize: convert the input to bytes.
Scale: divide or multiply to reach the target unit.
Round: apply the chosen decimal places for display.

How to Use This Calculator

Enter a number under Value and pick the corresponding Unit from the list (b, B, KB, MB, GB, TB, PB, KiB, MiB, GiB, TiB, PiB).
Adjust Decimal Places if you need more or fewer digits.
Click Convert to populate the results table and update the chart.
Use Download Results CSV or Download Results PDF to export your table.
Review the Example Data Table for quick reference of typical sizes.

FAQs

KB is decimal (1000 bytes). KiB is binary (1024 bytes). Many operating systems and tools use IEC units (KiB, MiB, GiB) to avoid ambiguity.

Storage vendors usually quote decimal sizes (GB = 1,000,000,000 B). OS tools often report binary sizes (GiB = 1,073,741,824 B), so the numeric value appears smaller.

Network speeds are usually expressed in bits per second (e.g., Mb/s). File sizes are in bytes. Convert by dividing or multiplying by eight as needed.

It depends on your use case. Two to four decimals are readable for most tasks. Use more precision for engineering or benchmarking work.

This page exports the results table to CSV or PDF. To export the chart, use your browser’s print or screenshot features.

Yes. The engine computes up to PB and PiB. Values beyond that may be added if needed.

SI (Decimal, base 1000)

IEC (Binary, base 1024)

1) Why are KB and KiB different?

2) Why does my disk show less space than advertised?

3) Should I use bits or bytes for network throughput?

4) How many decimal places should I use?

5) Can I export the chart?

6) Does this handle petabytes?

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