Converters & calculators · online · free
Roman numerals
Enter a number or Roman numerals.
What the tool does
Turns a number into Roman numerals (I, V, X, L, C, D, M) and Roman numerals back into a number.
How to use it
- Enter a number like 1994 or Roman numerals like MCMXCIV.
- Copy the result.
Good to know
- Numbers from 1 to 3999 are supported.
- Wrong forms like IIII count as an error.
Frequently asked questions
- Why is IIII wrong?
- The usual form is IV.
- Is there a zero?
- Roman numerals have no zero.