11 in Roman numerals
XI
The number 11 is written XI in Roman numerals.
How XI breaks down
| Symbols | Value |
|---|---|
X | 10 |
I | 1 |
XI | 11 |
Every symbol here is written in descending order and simply added together — no subtractive pairs are involved.
Nearby numbers
| Number | Roman numeral |
|---|---|
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 9 | IX |
| 10 | X |
| 11 | XI |
| 12 | XII |
| 13 | XIII |
| 14 | XIV |
| 15 | XV |
| 16 | XVI |
The seven symbols
I | 1 | C | 100 |
V | 5 | D | 500 |
X | 10 | M | 1,000 |
L | 50 |
11 in other notations
| Roman | XI |
| Binary | 1011 |
| Hexadecimal | B |
| Octal | 13 |
| Written out | eleven |
Writing it by hand
Work down through the symbol values, taking as many of each as will fit before moving to the next. For 11:
X = 10 remaining: 1
I = 1 remaining: 0The result reads XI — 2 characters, against 2 digits in Arabic numerals.
Frequently asked questions
What is 11 in Roman numerals?
XI
How do you read XI?
Work left to right, adding each symbol — except where a smaller symbol precedes a larger one, in which case it is subtracted. X is 10, I is 1, giving 11 in total.
How do you write 11 in words?
eleven.
Why is there no zero?
Roman numerals have no symbol for zero. The concept reached Europe only with Hindu-Arabic numerals, centuries after the system was in use — which is a large part of why it was eventually replaced for arithmetic.