Roman numerals reference
Modern clocks and outlines still use these forms; classical subtractive notation applies (IV = 4).
| Arabic | Roman |
|---|---|
| 1 | I |
| 2 | II |
| 3 | III |
| 4 | IV |
| 5 | V |
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 9 | IX |
| 10 | X |
| 20 | XX |
| 30 | XXX |
| 40 | XL |
| 50 | L |
| 90 | XC |
| 100 | C |
| 400 | CD |
| 500 | D |
| 900 | CM |
| 1000 | M |
| 2024 | MMXXIV |
| 2026 | MMXXVI |
Notes
- Large numbers sometimes use bars over numerals for ×1000 — rare on the web.
- Do not mix additive IIII on clocks with standard IV rules blindly.