1 in Roman Numerals
Number to Roman Numeral
1
=
I
How I Breaks Down
The Roman numeral I is composed of the following parts:
I = I = 1 = 1
Roman Numeral Reference
| Roman | Value |
|---|---|
| I | 1 |
| IV | 4 |
| V | 5 |
| IX | 9 |
| X | 10 |
| XL | 40 |
| L | 50 |
| XC | 90 |
| C | 100 |
| CD | 400 |
| D | 500 |
| CM | 900 |
| M | 1,000 |
Nearby Roman Numerals
How Roman Numerals Work
Roman numerals use seven basic symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1,000).
Symbols are generally written from largest to smallest, left to right, and their values are added together. However, when a smaller symbol appears immediately before a larger one, it is subtracted instead of added. This is called subtractive notation.
For example: IV = 5 − 1 = 4, and IX = 10 − 1 = 9. But VI = 5 + 1 = 6, and XI = 10 + 1 = 11.
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