> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man7/orders.7.md).

# orders.7

`orders` — 数量级

## 名称

`orders`

## 描述

下表列出了常见的字节倍数。

| **名称**     | **前缀**   | **2 的幂** | **10 的幂** |
| ---------- | -------- | -------- | --------- |
| Kilobyte   | kB       | 2^10     | 10^3      |
| Megabyte   | MB       | 2^20     | 10^6      |
| Gigabyte   | GB       | 2^30     | 10^9      |
| Terabyte   | TB       | 2^40     | 10^12     |
| Petabyte   | PB       | 2^50     | 10^15     |
| Exabyte    | EB       | 2^60     | 10^18     |
| Zettabyte  | ZB       | 2^70     | 10^21     |
| Yottabyte  | YB       | 2^80     | 10^24     |
| Ronnabyte  | \*\*\*\* | 2^90     | 10^27     |
| Quettabyte | QB       | 2^100    | 10^30     |

下表列出了以 10 的幂表示的常见比特率。

| **名称**              | **前缀** | **每秒比特数**  | **每秒字节数**     |
| ------------------- | ------ | ---------- | ------------- |
| Bit per second      | bit/s  | 1          | 0.125         |
| Byte per second     | B/s    | 8          | 1             |
| Kilobit per second  | kbit/s | 10^3       | 125           |
| Kilobyte per second | kB/s   | 8 \* 10^3  | 1000          |
| Megabit per second  | Mbit/s | 10^6       | 125000        |
| Megabyte per second | MB/s   | 8 \* 10^6  | 1000000       |
| Gigabit per second  | Gbit/s | 10^9       | 125000000     |
| Gigabyte per second | GB/s   | 8 \* 10^9  | 1000000000    |
| Terabit per second  | Tbit/s | 10^12      | 125000000000  |
| Terabyte per second | TB/s   | 8 \* 10^12 | 1000000000000 |

下表列出了以 10 的幂表示的常见数量级。

| **名称**        | **数量级** | **前缀** | **符号** | **十进制**                          |
| ------------- | ------- | ------ | ------ | -------------------------------- |
| Nonillionth   | 10^-30  | quecto | q      | 0.000000000000000000000000000001 |
| Octillionth   | 10^-27  | ronto  | r      | 0.000000000000000000000000001    |
| Septillionth  | 10^-24  | yocto  | y      | 0.000000000000000000000001       |
| Sextillionth  | 10^-21  | zepto  | z      | 0.000000000000000000001          |
| Quintillionth | 10^-18  | atto   | a      | 0.000000000000000001             |
| Quadrillionth | 10^-15  | femto  | f      | 0.000000000000001                |
| Trillionth    | 10^-12  | pico   | p      | 0.000000000001                   |
| Billionth     | 10^-9   | nano   | n      | 0.000000001                      |
| Millionth     | 10^-6   | micro  | mu     | 0.000001                         |
| Thousandth    | 10^-3   | milli  | m      | 0.001                            |
| Hundredth     | 10^-2   | centi  | c      | 0.01                             |
| Tenth         | 10^-1   | deci   | d      | 0.1                              |
| One           | 10^0    | -      | -      | 1                                |
| Ten           | 10^1    | deca   | da     | 10                               |
| Hundred       | 10^2    | hecto  | h      | 100                              |
| Thousand      | 10^3    | kilo   | k      | 1000                             |
| Million       | 10^6    | mega   | M      | 1000000                          |
| Billion       | 10^9    | giga   | G      | 1000000000                       |
| Trillion      | 10^12   | tera   | T      | 1000000000000                    |
| Quadrillion   | 10^15   | peta   | P      | 1000000000000000                 |
| Quintillion   | 10^18   | exa    | E      | 1000000000000000000              |
| Sextillion    | 10^21   | zetta  | Z      | 1000000000000000000000           |
| Septillion    | 10^24   | yotta  | Y      | 1000000000000000000000000        |
| Octillion     | 10^27   | ronna  |        | 1000000000000000000000000000     |
| Nonillion     | 10^30   | quetta | Q      | 1000000000000000000000000000000  |

## 参见

units(1), number(6)

## 标准

对于二进制前缀集合的标准化曾有过多次尝试。国际电工委员会（IEC）等组织曾提出诸如“kibi”、“mebi”、“gibi”和“yobi”等新前缀，但其采纳程度至多只能说是缓慢。

## 作者

本手册页由 Jukka Ruohonen <jruoho@netbsd.org> 编写。


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