The Roman numeral for 1 is I. Break 1 into thousands, hundreds, tens and ones to see why. The converter below turns any number into Roman numerals and back.
1 as a Roman Numeral
I is a single block of symbols that equals 1.
Clock faces use I to XII, and I marks hour 1.
Free Roman Numeral Converter
How 1 Breaks Down
| Place | Value | Roman |
|---|---|---|
| Ones | 1 | I |
| Total | 1 | I |
Write the parts in order from largest to smallest to get I.
The Rules That Make I
| Symbol | I | V | X | L | C | D | M |
|---|---|---|---|---|---|---|---|
| Value | 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
- Add symbols from largest to smallest: VI = 5 + 1.
- Repeat I, X, C or M up to three times: XXX = 30.
- Put a smaller symbol before a larger one to subtract: IV = 4, IX = 9.
I has no subtractive pair, so you only add the symbols from left to right.
1 and the Numbers Around It
| Number | Roman numeral |
|---|---|
| 2 in Roman numerals | II |
| 3 in Roman numerals | III |
| 4 in Roman numerals | IV |
| 5 in Roman numerals | V |
See the full list in the Roman numerals chart.
FAQs About 1 in Roman Numerals
What is 1 in Roman numerals?
1 in Roman numerals is I.
What is I as a number?
I equals 1.
How do you write 2 in Roman numerals?
2 in Roman numerals is II.
How many letters are in I?
I has 1 letter.
The Short Version
1 is I. Split the number into thousands, hundreds, tens and ones, write each part, and join them in order.
