Ⅻ Roman Numeral Converter
Convert between numbers and Roman numerals in either direction.
Roman Numeral Values
I = 1 · V = 5 · X = 10 · L = 50 · C = 100 · D = 500 · M = 1000. Smaller values placed before a larger value are subtracted (e.g. IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900).
Frequently Asked Questions
What is the highest number Roman numerals can represent?
Using standard notation, Roman numerals can represent numbers up to 3,999 (MMMCMXCIX). There is no
standard symbol for zero or negative numbers.
Guide: understanding your result
- Roman numerals use seven symbols: I (1), V (5), X (10), L (50), C (100), D (500) and M (1,000).
- A smaller symbol before a larger one is subtracted, but only in six standard pairs: IV, IX, XL, XC, CD and CM.
- Standard notation covers 1 to 3,999; there is no symbol for zero.
Worked example
2026 = 2000 (MM) + 20 (XX) + 6 (VI) = MMXXVI. 1994 = M + CM + XC + IV = MCMXCIV.
Common mistakes to avoid
- Writing 99 as IC — the correct form is XCIX.
- Repeating V, L or D; only I, X, C and M can repeat, at most three times.
Frequently asked questions
Why do clocks show IIII instead of IV?
It is a long-standing watchmaking convention for visual balance, not a rule of the numeral system.
Examples are calculated live from the same data the calculator uses and are for education only — they are not financial, tax or investment advice.
More Utility calculators
See all →✔ Reviewed by GelirLab Editöryal Ekibi · How we check our calculators