Roman Numeral Converter
Roman Numeral Converter translates any integer (1–3999) to Roman numerals and parses Roman numeral strings back to integers, running entirely in your browser with no server needed.
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How to convert Roman numerals
- 1 Enter a number (1–3999) to convert it to Roman numerals.
- 2 Or enter Roman numerals (e.g. XIV) to convert back to a number.
- 3 Results appear instantly as you type.
Frequently Asked Questions
- What numbers are supported?
- Standard Roman numerals represent 1–3999. Numbers outside this range (0, negatives, or 4000+) cannot be represented in traditional Roman numeral notation.
- Is zero a Roman numeral?
- No — the Roman numeral system has no symbol for zero. Zero was not used in classical Roman mathematics.
- Are lowercase Roman numerals accepted?
- Yes — the converter accepts both uppercase (XIV) and lowercase (xiv) Roman numerals as input.