Math & School

Roman numerals converter

Convert a number to Roman numerals – or the other way round, with a worked example.

Updated on May 25, 2026 Calculator, calculation path and examples on one page

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Direction

Number (1 to 3999)

Roman numeral

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Examples

2026 as a Roman numeral.

Roman numeral: MMXXVI

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49 as a Roman numeral (XLIX).

Roman numeral: XLIX

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Convert MCMLXXXIV to a number.

Number: 1,984

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FAQ

What symbols are there in Roman numerals?

I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1000. All numbers are composed of these symbols.

How does the subtraction rule work?

If a smaller symbol precedes a larger one, it is deducted: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900.

What number can I count up to?

Classic Roman numbers range from 1 to 3999. Larger numbers require special notations that are not used here.

Is there a zero in Roman numerals?

No. The Roman numeral system does not have a symbol for zero.

For example, why does 2026 become MMXXVI?

2026 = 1000 + 1000 + 10 + 10 + 5 + 1, so MM + XX + V + I = MMXXVI.

Can a symbol be repeated as many times as desired?

I, X, C and M may appear in a row no more than three times. V, L and D are never repeated.

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Sources and notes

methodology: Additive and subtractive notation with the symbols I, V, X, L, C, D, M.