Roman numerals, the numeric system used in ancient Rome, The online Roman Numerals calculator converts Roman numerals to Hindu-Arabic numerals or vice versa.
The numbers 1 to 10 can be expressed in Roman numerals as I, II, III, IV, V, VI, VII, VIII, IX, X.
| Standard Number | Roman Number |
| 1 | I |
| 5 | V |
| 10 | X |
| 50 | L |
| 100 | C |
| 500 | D |
| 1000 | M |
| 5000 | v |
| 10000 | x |
| 50000 | l |
| 100000 | c |
| 500000 | d |
| 1000000 | m |