💾 字节 ↔ 比特Byte to Bit
字节 ↔ 比特。支持字节、比特、千字节、兆比特互算。Bytes ↔ bits. Units: byte, bit, kilobyte, megabit.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「字节 ↔ 比特」是什么？What is the Byte to Bit tool?
字节 ↔ 比特。支持字节、比特、千字节、兆比特互算。Bytes ↔ bits. Units: byte, bit, kilobyte, megabit.
如何使用「字节 ↔ 比特」？How do I use the Byte to Bit tool?
在「字节 ↔ 比特」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Byte to Bit and choose the source unit; the table shows the value in every other unit at once, ready to copy.
Mb 和 MB 有什么区别？What is the difference between Mb and MB?
小写 b 是比特，大写 B 是字节：1 Mb（兆比特）= 10⁶ 比特，1 MB（兆字节）= 10⁶ 字节 = 8 × 10⁶ 比特。网速常用 Mb/s，所以 100 Mb/s 约等于每秒 12.5 MB。Lower-case b is bits and upper-case B is bytes: 1 Mb (megabit) = 10⁶ bits, while 1 MB (megabyte) = 10⁶ bytes = 8 × 10⁶ bits. Network speeds use Mb/s, so 100 Mb/s is about 12.5 MB per second.
1 字节 等于多少其他单位？How much is 1 byte in the other units?
1 字节 = 8 比特 = 0.001 千字节 = 8 × 10^-6 兆比特（按定义系数计算，最多保留 10 位有效数字）。本页不接受负数：输入负值会提示错误。1 byte = 8 bit = 0.001 kilobyte = 8 × 10^-6 megabit (from the defined factors, up to 10 significant digits). Negative values are not accepted here and show an error.
有哪些选项可以调整？What options can I adjust?
「字节 ↔ 比特」的设置：「数值」默认 1。每次生成结果都按当前设置处理。Settings in the Byte to Bit — "Value" default 1. The result always uses the current settings.
换算系数准确吗？Are the conversion factors exact?
「字节 ↔ 比特」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Byte to Bit uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「字节 ↔ 比特」免费吗？需要注册吗？Is the Byte to Bit free? Do I need an account?
「字节 ↔ 比特」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Byte to Bit is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.