Roman Numeral Converter
Convert numbers to Roman numerals and back, with a breakdown.
How it breaks down
The seven symbols
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
_V for 5,000.About the Roman Numeral Converter
Type a number to get its Roman form, or type a numeral to get the number — both directions update live, with a table showing how each symbol contributes and where subtraction applies.
Values above 3,999 use the overline convention for thousands, written here with a leading underscore so it survives copy and paste.
Frequently asked questions
Why is 4 written IV and not IIII?
Subtractive notation: a smaller symbol before a larger one is subtracted. Clock faces often use IIII anyway, purely for visual balance.
Is there a Roman numeral for zero?
No. The system has no symbol for zero — Romans used the word nulla when they needed the idea.
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