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数据大小转换器

转换数字数据大小单位 — 字节、千字节、兆字节、吉字节、太字节及其二进制等效单位。

转换数字存储单位 — 十进制(KB, MB, GB)和二进制(KiB, MiB, GiB)

结果
请输入要转换的数值
十进制单位(KB, MB, GB)使用1000的倍数，二进制单位(KiB, MiB, GiB)使用1024的倍数。操作系统和硬件可能以不同方式显示大小。

How to Use This Tool

  1. 1

    Enter a data size value

    Type the numeric file or storage size you want to convert.

  2. 2

    Select the source unit

    Choose from bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes, or their binary equivalents (KiB, MiB, GiB, TiB, PiB).

  3. 3

    Pick the target unit

    Select the unit to convert to. Use the swap button to quickly reverse the conversion direction.

  4. 4

    Compare all units at once

    The expanded table below the result shows your value in every data size unit — both decimal (SI) and binary (IEC) standards.

Frequently Asked Questions

What is the difference between MB and MiB?
MB (megabyte) uses the decimal standard: 1 MB = 1,000,000 bytes. MiB (mebibyte) uses the binary standard: 1 MiB = 1,048,576 bytes. Hard drive manufacturers use MB, while operating systems often use MiB.
How many gigabytes are in a terabyte?
In the decimal (SI) standard, 1 TB = 1,000 GB. In the binary (IEC) standard, 1 TiB = 1,024 GiB.
Why does my hard drive show less space than advertised?
Manufacturers label drives using decimal units (1 TB = 1,000 GB), but many operating systems display sizes in binary units (1 TiB = 1,024 GiB). This makes a 1 TB drive appear as roughly 931 GiB.
What are the binary IEC units?
IEC units (KiB, MiB, GiB, TiB, PiB) use powers of 1,024 instead of 1,000. They were introduced to eliminate confusion between decimal and binary interpretations of kilo, mega, giga, etc.