File Size Converter - B/KB/MB/GB/TB/PB Converter

What is File Size Converter?

A file size converter that converts between storage and transfer size units. SI uses KB=1000B (decimal), while IEC uses KiB=1024B (binary). Different operating systems and software use different standards, so it's important to distinguish between them.

See also: Unit Converter

How to Use

1. Enter the file size and unit you want to convert
2. Select SI (decimal) or IEC (binary)
3. All unit conversions are displayed in a list
4. Click the copy button on each row to copy the value

FAQ

What is the difference between KB and KiB?

KB (kilobyte) is 1000 bytes (SI), while KiB (kibibyte) is 1024 bytes (IEC). The distinction is important when comparing storage and memory values.

Which standard should I use?

Hard disk capacities typically use SI (decimal), while OS memory management uses IEC (binary). Choose based on your context.

Are large units like TB and PB supported?

Yes. Not just KB, MB, and GB, but also large units like TB (terabytes) and PB (petabytes) are supported.

Is my data sent to a server?

No. All calculations are done in the browser. Your input values are never sent externally.

What precision is used for calculations?

Calculations use JavaScript's floating-point numbers (64-bit). This is sufficient precision for normal use, but rounding errors may occur with extremely large values.

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