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Roman numeral converter
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About this tool
Convert integers 0–3999 to canonical Roman numerals, with N for zero.
Common uses
- Convert integers 0–3999 to canonical Roman numerals, with N for zero.
- Choose number-to-Roman for decimal digits, or Roman-to-number for I, V, X, L, C, D, M or N.
How to use it
- 1.Choose number-to-Roman for decimal digits, or Roman-to-number for I, V, X, L, C, D, M or N.
- 2.Convert and copy the result; Roman input is case-insensitive.
Worked example
Input and result
2026
MMXXVI
The canonical Roman representation round-trips to the original integer.
Limits and notes
- Zero uses the special notation N. Noncanonical forms such as IIII, negative numbers, fractions and values above 3999 are rejected.
Frequently asked questions
What does this tool do?
Convert integers 0–3999 to canonical Roman numerals, with N for zero.
What should I check before using the result?
Zero uses the special notation N. Noncanonical forms such as IIII, negative numbers, fractions and values above 3999 are rejected.