Help
About this tool
Turn a number into standard Roman numerals, or read a Roman numeral back into an integer. Supports the traditional range from 1 to 3999.
How to use
- Type or paste a value into the input box.
- Choose To Roman to turn a number into Roman numerals, or To Number to read a Roman numeral.
- Copy the result with the Copy button.
Is my data uploaded anywhere?
No. The conversion happens entirely in your browser.
What range is supported?
Values from 1 to 3999, the standard range for conventional Roman numerals.