Calculatorism

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals (and back).

Input Data

Number→Roman or Roman→number.
Num
Rom

Results

Converted value.
MMXXVI
Explanatory note about the result.
2026 = MMXXVI

At a glance:Symbols I=1, V=5, X=10, L=50, C=100, D=500, M=1000; subtractive pairs (IV=4, IX=9, XL=40, XC=90, CD=400, CM=900). Complements numeral and ordinal.

Formula

numeral ↔ number.

How to Use

  1. Pick a mode and enter a value.
  2. The tool returns the conversion.

Case Studies

1994

MCMXCIV.

FAQ

Largest representable?

Traditionally up to 3999 (MMMCMXCIX) without overlines.

Related Tools

References

Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Roman Numeral Converter（/math/roman）。