Convert numbers to Roman numerals and Roman numerals back to numbers. Supports values from 1 to 3,999 with full validation.
| Symbol | Value | Symbol | Value | Symbol | Value |
|---|---|---|---|---|---|
| I | 1 | X | 10 | C | 100 |
| IV | 4 | XL | 40 | CD | 400 |
| V | 5 | L | 50 | D | 500 |
| IX | 9 | XC | 90 | M | 1000 |
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