42 in Roman numerals is XLII. Split 42 into place values, write each part, and join them. The converter below works for any number from 1 to 3999.
What Is 42 in Roman Numerals?
Read XLII from left to right and add the values: XL (40) + II (2) = 42.
Roman numerals also number book chapters, outlines, and the names of kings and popes.
Convert Any Number to Roman Numerals
42: Thousands, Hundreds, Tens and Ones
| Place | Value | Roman |
|---|---|---|
| Tens | 40 | XL |
| Ones | 2 | II |
| Total | 42 | XLII |
Write the parts in order from largest to smallest to get XLII.
Roman Numeral Rules Behind XLII
| Symbol | I | V | X | L | C | D | M |
|---|---|---|---|---|---|---|---|
| Value | 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
- Add symbols from largest to smallest: VI = 5 + 1.
- Repeat I, X, C or M up to three times: XXX = 30.
- Put a smaller symbol before a larger one to subtract: IV = 4, IX = 9.
In XLII, the subtractive pair is XL = 40. Every other symbol is added.
Roman Numerals Close to 42
| Number | Roman numeral |
|---|---|
| 38 in Roman numerals | XXXVIII |
| 39 in Roman numerals | XXXIX |
| 40 in Roman numerals | XL |
| 41 in Roman numerals | XLI |
| 43 in Roman numerals | XLIII |
| 44 in Roman numerals | XLIV |
| 45 in Roman numerals | XLV |
| 46 in Roman numerals | XLVI |
See the full list in the Roman numerals chart.
Quick Answers About XLII
What is 42 in Roman numerals?
42 in Roman numerals is XLII.
What is XLII as a number?
XLII equals 42.
How do you write 43 in Roman numerals?
43 in Roman numerals is XLIII.
What is 41 in Roman numerals?
41 in Roman numerals is XLI.
Quick Summary
42 is XLII. Split the number into thousands, hundreds, tens and ones, write each part, and join them in order.
