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免费 Roman Numeral Converter
Convert numbers to Roman numerals and back. Supports 1–3999 with full subtractive notation.
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Roman numeral
MMXXIV
Common values
Roman numeral rules: I=1, V=5, X=10, L=50, C=100, D=500, M=1000.
Subtractive notation: IV=4, IX=9, XL=40, XC=90, CD=400, CM=900. Standard numerals max out at MMMCMXCIX (3999).
Vinculum: a bar over a numeral multiplies it by 1000 (V̅ = 5000, X̅ = 10000, M̅ = 1,000,000), extending the range to 3,999,999.
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工作原理
1
输入
输入你的文本或数据。
2
处理
在你的浏览器中即时处理。无服务器，无等待。
3
下载
保存你的结果。不存储任何内容。
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✓Runs entirely in your browser — no uploads
✓Works on any device — phone, tablet, desktop
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✓Loads fast, with no installation needed
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