Roman Numeral Converter
Convert any number (1–3999) to Roman numerals, or convert Roman numeral strings back to Arabic numbers. With step-by-step breakdown.
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Converter
Arabic to Roman
Convert whole numbers into classic Roman numeral form.
Arabic Number
Roman to Arabic
Paste Roman numerals and convert them back into whole numbers.
Roman Numeral
Translate numbers in both directions
Convert whole numbers into Roman numerals, validate existing numerals, and inspect the step-by-step Roman breakdown.