∑ Math & Units
Roman Numeral Converter
Numbers to Roman numerals and back — supports 1 to 3999.
Runs in your browserNo account requiredNo uploadFree
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About Roman Numeral Converter
Type a number from 1 to 3999 to get its Roman numeral using standard subtractive notation (IV, IX, XL, XC, CD, CM), or paste a Roman numeral to convert it back to an integer.
Conversion happens locally in your browser.
Frequently asked questions
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