Roman Numeral Converter

Convert standard decimal numbers to Roman numerals (I, V, X, L, C, D, M) or translate Roman numerals into integers.

How to use this calculator

1. Pick direction.
2. Enter number or Roman string.
3. View result.

Formula & method

Roman Translation

Value = Sum of symbols

Standard symbols.

Example

2025 = MMXXV.

Key insights

• Uses subtractive notation.

How to interpret your result

Roman Numeral

Additive/subtractive Roman notation.

Frequently asked questions

Max number?

3,999 in standard notation.

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