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Supports 1–3999 (standard Roman numerals).
Frequently Asked Questions
How do Roman numerals work?
They use letters: I=1, V=5, X=10, L=50, C=100, D=500, M=1000. A smaller numeral before a larger one is subtracted (IV = 4, IX = 9). Standard Roman numerals cover 1 to 3999.
Convert numbers to Roman numerals and Roman numerals back to numbers (1–3999).