Number
47 in Roman numerals
47 is written XLVII
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How XLVII is built
Roman numerals are written one decimal place at a time, largest first.
- XLtens · 4X before L means 50 − 10 = 40. This saves writing XXXX.
- VIIones · 7V (5) plus II (2) makes 7.
40 + 7 = 47
The pair XL uses subtraction: a smaller letter before a larger one is taken away from it. Only six pairs work this way: IV, IX, XL, XC, CD and CM. More on subtraction
Mistakes to avoid
- Not VLII. It looks like a shortcut, but V is never written before a larger letter to subtract. The correct form is XLVII.
- Not XXXXVII (7 letters). That adds everything up without subtraction. The Romans sometimes wrote numbers this way, and clocks still show 4 as IIII, but today XLVII (5 letters) is the standard.
About the number 47
- 47 is a prime number: only 1 and 47 divide it exactly.
- XLVII has 5 letters. 604 of the numbers up to 1,000 have longer numerals.
Counting from 41 to 50
| Number | Roman numeral |
|---|---|
| 41 | XLI |
| 42 | XLII |
| 43 | XLIII |
| 44 | XLIV |
| 45 | XLV |
| 46 | XLVI |
| 47 | XLVII |
| 48 | XLVIII |
| 49 | XLIX |
| 50 | L |