🏛 十六进制转罗马数字Convert Hex to Roman Numeral
把十六进制整数（1–0xF9F，即 1–3999）转换成罗马数字，每行一个；可同时显示十进制。适合铭文、编号和教学，数据在本地处理。Convert hexadecimal integers (1-0xF9F, i.e. 1-3999) into Roman numerals, one per line; optionally show decimal too. Handy for inscriptions, numbering and teaching. Processed locally.
使用说明与常见问题How-to & FAQ
「十六进制转罗马数字」是什么？What is the Convert Hex to Roman Numeral tool?
把十六进制整数（1–0xF9F，即 1–3999）转换成罗马数字，每行一个；可同时显示十进制。适合铭文、编号和教学，数据在本地处理。Convert hexadecimal integers (1-0xF9F, i.e. 1-3999) into Roman numerals, one per line; optionally show decimal too. Handy for inscriptions, numbering and teaching. Processed locally.
如何使用「十六进制转罗马数字」？How do I use the Convert Hex to Roman Numeral tool?
在「十六进制转罗马数字」中，把内容粘贴或输入到上方输入框，结果会实时显示在下方，点击「复制结果」即可复制。例如输入「C8」，得到「CC」。Type or paste hex numbers from 1 to F9F (1 to 3999), one per line; each is written as a Roman numeral, so C8 becomes CC. Tick "Also show decimal" to see the decimal value too, and click "Copy result" to copy the list.
为什么最大是 3999？Why is 3999 the maximum?
传统罗马数字通常只用到 MMMCMXCIX（3999）；更大的数需要额外记号，本工具不支持。Classical Roman numerals usually stop at MMMCMXCIX (3999); larger values need extra marks this tool does not use.
输入可以带 0x 吗？Can the input use 0x?
可以，0xC8 和 C8 都得到 CC；大小写都行。Yes — 0xC8 and C8 both give CC, in either letter case.
结果精确吗？Is the result exact?
精确。十六进制按大整数（BigInt）解析，不经过浮点；超出 1–3999（0x1–0xF9F）的数会明确报错，不会四舍五入。Yes. Hex is parsed as big integers (BigInt) with no floating-point; values outside 1–3999 (0x1–0xF9F) get a clear error instead of being rounded.
输入和输出是什么样的？What does the input and output look like?
例如在「十六进制转罗马数字」中输入 C8，输出为：CC（⏎ 表示换行）。For example, the Convert Hex to Roman Numeral turns the input C8 into: CC (⏎ marks a line break).
有哪些选项可以调整？What options can I adjust?
「十六进制转罗马数字」的设置：可勾选：「同时显示十进制」。改动任一选项后结果会按新设置重新生成。Settings in the Convert Hex to Roman Numeral — tick boxes: "Also show decimal". Changing any option regenerates the result with the new setting.
「十六进制转罗马数字」免费吗？需要注册吗？Is the Convert Hex to Roman Numeral free? Do I need an account?
「十六进制转罗马数字」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 Convert Hex to Roman Numeral is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.