Roman Numeral Converter
Convert numbers to Roman numerals and back (1–3999), with a step-by-step breakdown.
How to use
- Type in either box.
FAQ
Why is 4 IV and not IIII?
Standard form uses subtraction: IV = 5 − 1. Some clocks still show IIII.
Convert numbers to Roman numerals and back (1–3999), with a step-by-step breakdown.
Standard form uses subtraction: IV = 5 − 1. Some clocks still show IIII.