Ones: IV and IX
IV is 4 because I comes before V. IX is 9 because I comes before X.
Convert numbers to Roman numerals—or decode Roman numerals back to numbers—in an instant. See the logic behind every answer with a clear, step-by-step breakdown.
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2026 written in Roman numerals
How it is built
Seven letters form every standard Roman numeral. Larger numbers come from combining these symbols and using subtraction pairs such as IV for 4 and IX for 9.
This free Roman numeral converter online handles both directions and updates as you type. There is no form to submit and nothing to install.
Roman numerals normally add symbols from largest to smallest. When a smaller symbol appears before a larger one, it is subtracted instead. These six standard subtraction pairs keep numerals compact.
IV is 4 because I comes before V. IX is 9 because I comes before X.
XL is 40 because X comes before L. XC is 90 because X comes before C.
CD is 400 because C comes before D. CM is 900 because C comes before M.
Select Number to Roman and enter a whole number from 1 to 3999. The Roman numeral and its place-value breakdown appear instantly. For example, 2026 becomes MMXXVI.
Select Roman to Number and type letters from the Roman numeral system: I, V, X, L, C, D and M. Lowercase is accepted and changed to uppercase automatically.
2026 is MMXXVI: MM represents 2000, XX represents 20 and VI represents 6.
Modern standard Roman numerals use ordinary letters for values from 1 through 3999. Larger historical notations require extra conventions, such as an overline to multiply a value by 1,000.
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