The Roman numeral XL corresponds to the Arabic number 40.
XL = 40
Symbols are written and read from left to right, from highest to lowest.
If number XL is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 40.
XXXIX is number 39
XLI is number 41
Calculate the conversion of any number and its equivalent in Roman numerals with our Roman numerals converter.