Roman numerals
Type a number or a numeral such as XIV. The other form appears below.
- 1 to 3999
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How to use it
- Type a number from 1 to 3999, or a numeral.
- Read the result.
- Standard forms only. IIII is not accepted as 4.
The symbols
The page uses I, V, X, L, C, D and M with the usual subtractive pairs: IV, IX, XL, XC, CD and CM. 1990 is MCMXC. A numeral is accepted only when it is the standard spelling of its value, so the same number always has one written form.
Numbers outside 1 to 3999, and symbols beyond those seven letters, are rejected. There is no overline for thousands beyond 3999.
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Privacy
The text stays in this tab and is not uploaded.
Questions
Why is IIII rejected?
This page uses IV for 4. Clock faces that use IIII are a different convention.
What is 2026?
MMXXVI.
Are lowercase letters allowed?
Yes. They are read as uppercase.