240 in Roman numerals
CCXL
The number 240 is written CCXL in Roman numerals.
How CCXL breaks down
| Symbols | Value |
|---|---|
CC | 2 × 100 = 200 |
XL | 40 |
CCXL | 240 |
This numeral uses the subtractive rule: a smaller symbol placed before a larger one is subtracted from it. Only six such pairs are legal — IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900).
Nearby numbers
| Number | Roman numeral |
|---|---|
| 235 | CCXXXV |
| 236 | CCXXXVI |
| 237 | CCXXXVII |
| 238 | CCXXXVIII |
| 239 | CCXXXIX |
| 240 | CCXL |
| 241 | CCXLI |
| 242 | CCXLII |
| 243 | CCXLIII |
| 244 | CCXLIV |
| 245 | CCXLV |
The seven symbols
I | 1 | C | 100 |
V | 5 | D | 500 |
X | 10 | M | 1,000 |
L | 50 |
240 in other notations
| Roman | CCXL |
| Binary | 11110000 |
| Hexadecimal | F0 |
| Octal | 360 |
| Written out | two hundred and forty |
Writing it by hand
Work down through the symbol values, taking as many of each as will fit before moving to the next. For 240:
2 × C = 200 remaining: 40
XL = 40 remaining: 0The result reads CCXL — 4 characters, against 3 digits in Arabic numerals.
Frequently asked questions
What is 240 in Roman numerals?
CCXL
How do you read CCXL?
Work left to right, adding each symbol — except where a smaller symbol precedes a larger one, in which case it is subtracted. CC is 200, XL is 40, giving 240 in total.
How do you write 240 in words?
two hundred and forty.
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.