🏛️ 罗马数字转换Roman Numeral Converter
阿拉伯数字与罗马数字互相转换（1–3999），自动识别输入。Convert between Arabic numbers and Roman numerals (1–3999), auto-detected.
使用说明与常见问题How-to & FAQ
「罗马数字转换」是什么？What is the Roman Numeral Converter tool?
阿拉伯数字与罗马数字互相转换（1–3999），自动识别输入。Convert between Arabic numbers and Roman numerals (1–3999), auto-detected.
如何使用「罗马数字转换」？How do I use the Roman Numeral Converter tool?
在「罗马数字转换」中，填写「数字或罗马数字」等参数，结果会随输入实时计算并显示在下方。In the Roman Numeral Converter: Fill in "Number or numeral"; results are recalculated instantly as you type.
计算精度如何？How precise are the results?
「罗马数字转换」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Roman Numeral Converter uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「罗马数字转换」免费吗？需要注册吗？Is the Roman Numeral Converter free? Do I need an account?
「罗马数字转换」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 Roman Numeral 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.