📦 文件大小换算File Size Converter
在 B、KB/MB/GB/TB（1000 进制）与 KiB/MiB/GiB/TiB（1024 进制）之间精确换算。本地处理。Convert exactly between B, KB/MB/GB/TB (powers of 1000) and KiB/MiB/GiB/TiB (powers of 1024). Processed locally.
使用说明与常见问题How-to & FAQ
「文件大小换算」是什么？What is the File Size Converter tool?
在 B、KB/MB/GB/TB（1000 进制）与 KiB/MiB/GiB/TiB（1024 进制）之间精确换算。本地处理。Convert exactly between B, KB/MB/GB/TB (powers of 1000) and KiB/MiB/GiB/TiB (powers of 1024). Processed locally.
如何使用「文件大小换算」？How do I use the File Size Converter tool?
在「文件大小换算」中，按需设置「数值」、「从」、「到」等选项，然后点击「换算」按钮即可。In the File Size Converter: Set "Value", "From", "To", then click "Convert".
KB 还是 KiB？KB vs KiB?
KB/MB/GB/TB 每级 1000 倍（十进制，硬盘厂商常用）；KiB/MiB/GiB/TiB 每级 1024 倍（二进制，操作系统常用）。两个下拉列表的单位完全一样。KB/MB/GB/TB step by 1000 (decimal, used by drive makers); KiB/MiB/GiB/TiB step by 1024 (binary, used by many operating systems). Both lists offer exactly the same units.
换算系数和结果精确吗？Are the factors and results exact?
完全精确。计算用整数（BigInt）进行，1000 和 1024 的换算结果都是有限小数，因此显示全部位数、不做四舍五入，例如 1 B = 0.0009765625 KiB。Exact. The maths uses whole numbers (BigInt), and every conversion between powers of 1000 and 1024 ends in a finite decimal, so all digits are shown without rounding — for example 1 B = 0.0009765625 KiB.
有哪些选项可以调整？What options can I adjust?
「文件大小换算」的设置：「数值」默认 1；「从」可选 B、KB (1000)、MB (1000²)、GB (1000³)、TB (1000⁴)、KiB (1024)等（默认 B）；「到」可选 B、KB (1000)、MB (1000²)、GB (1000³)、TB (1000⁴)、KiB (1024)等（默认 B）。每次生成结果都按当前设置处理。Settings in the File Size Converter — "Value" default 1; "From": B, KB (1000), MB (1000²), GB (1000³), TB (1000⁴), KiB (1024), etc. (default B); "To": B, KB (1000), MB (1000²), GB (1000³), TB (1000⁴), KiB (1024), etc. (default B). The result always uses the current settings.
「文件大小换算」免费吗？需要注册吗？Is the File Size Converter free? Do I need an account?
「文件大小换算」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 File Size Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.