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Roman Numerals

ConversionOffline-ready

Roman Numerals Converter translates between standard decimal numbers and Roman numeral notation in both directions. Type a number (1–3999) to get the Roman numeral, or type a Roman numeral (I, V, X, L, C, D, M) to get the decimal value. Includes a quick-reference table of Roman numeral values. Runs entirely in your browser.

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Roman numerals — conversion and reference

Converts integers to Roman numerals and vice versa. Paste a number like 2024 to get MMXXIV, or paste a Roman numeral to decode it. Roman numerals are still used for book chapters, film sequels, clock faces, and year designations.