How to write 48 in Roman numerals
Roman numerals are built place by place, from the largest value to the smallest. For 48 the places are 40 (tens), 8 (ones).
- Write 40 as
XL. - Write 8 as
VIII.
Joined together, XL + VIII gives XLVIII.
48 digit by digit
| Place | Value | Numeral | Rule used |
|---|---|---|---|
| tens | 40 | XL | subtractive: one symbol before the five symbol |
| ones | 8 | VIII | the five symbol plus three |
Check XLVIII by reading it back
Reading XLVIII from left to right and adding the pieces: XL = 40, VIII = 8. Together that is 40 + 8 = 48, so XLVIII and 48 match.
Mistakes to avoid with XLVIII
- Do not write the 4s and 9s additively. 48 uses subtractive pairs (
XLfor 40), not strings like IIII or VIIII. - Never repeat a symbol more than three times in a row. When a fourth would be needed, the subtractive form takes over.
- Only I, X and C may be placed before a larger symbol to subtract, so XLVIII never contains forms such as VX or LC.
- Read XLVIII as one number, not letter by letter: add the values left to right, except where a smaller symbol sits before a larger one.
Facts about the number 48
- 48 is an even number and composite, with prime factors 24 x 3.
- In binary 48 is
110000and in hexadecimal it is30. - Written out, 48 is "forty-eight".
- The digits of 48 add up to 12, so it is divisible by 3.
Where you will see 48 in Roman numerals
Fans of sports history see 48 written as XLVIII when discussing Super Bowl XLVIII. The consistent use of Roman numerals for this annual event has become a recognizable part of its official branding and marketing.
Numbers near 48
FAQ
What is 48 in Roman numerals?
48 is written XLVIII in Roman numerals. It is built from XL (40), VIII (8).
How do you write 48 in lowercase Roman numerals?
Lowercase Roman numerals use the same rules, so 48 is xlviii. Lowercase is common for page numbers in a book's preface and for outline levels.
How do I convert any number to Roman numerals?
Split the number into thousands, hundreds, tens and ones, write each part with the symbols I, V, X, L, C, D and M, then join them from largest to smallest. Or paste it into the Roman numeral converter, which also converts back.
More roman numerals
- 47 (XLVII): previous page
- 49 (XLIX): next page
- Roman numerals chart: the full list