Roman Numerals & Roman Letters Converter

Roman Numerals Converter and Roman Letters (Latin) Converter

Our free converter helps you convert to Roman numerals and convert Roman numerals to numbers. It also supports converting to Roman letters (Latin script) and from Roman letters to target scripts via practical romanization and transliteration. Perfect for education, captions, branding, and multilingual content.

Roman numerals

• Arabic numbers → Roman numerals (e.g., 2025 → MMXXV).
• Roman numerals → Arabic numbers (case-insensitive, e.g., mmxxv → 2025).
• Inline replacement in running text—convert just the numerals and keep everything else.

Roman letters (Latin script)

• To Roman letters (Latin) from scripts like Cyrillic, Greek, Arabic, Devanagari, Japanese, and more.
• From Roman letters to a target script (best-effort phonetic mapping when practical).
• System hints where applicable (e.g., Hepburn for Japanese, ISO/IAST for Indic languages).

Accuracy and limitations

Roman numeral conversion is deterministic and handled locally. Roman letters conversion is AI-assisted and approximates common standards. For strict scholarly or official standards, review and adjust as needed. Both modes preserve URLs, @handles, hashtags, emojis, and punctuation where you choose to keep them.