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Roman Numeral Converter
Type a number (1994) or a Roman numeral (MCMXCIV) and the conversion appears instantly, it detects which way you typed it.
Type a number (1994) or a Roman numeral (MCMXCIV).
HOW TO USE
- 1Type a number such as 1994, or a Roman numeral such as MCMXCIV.
- 2The tool detects which way you typed and converts instantly.
- 3Out-of-range or malformed input is flagged with clear validation.
- 4Copy the result with one click.
EXAMPLE
INPUT
1994
OUTPUT
MCMXCIV, converted with standard-form rules
FAQ
What range is supported?
1 to 3999, the range that can be written in standard Roman numeral form without extension bars.
Are lowercase numerals accepted?
Yes, input is case-insensitive, so mcmxciv works the same as MCMXCIV.
Why is 4 written IV and not IIII?
Standard form uses subtractive notation: IV means 1 before 5. The converter enforces these standard rules.