Roman Numeral Converter — Free Online

Convert Roman ↔ Arabic numerals

Free, fast, and runs entirely in your browser — no signup, no upload to a server.

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Sources we checked for Roman Numeral Converter

• NIST Digital Library of Mathematical Functions — Reference formulas and identities.
• Khan Academy — arithmetic and algebra — Free explanations of the underlying maths.
• Reserve Bank of India — Policy rates that drive EMI and interest calculations in India.
• W3C standards — The open specifications behind the web platform.