37 in Roman Numerals
The number 37 is written XXXVII in Roman numerals. Click the numeral below to copy it, or use the converter to try any other number.
XXXVII uses 3 of the seven Roman numeral symbols and is 6 characters long.
XXXVII is purely additive: every symbol is worth what it says and you simply add them together from left to right.
37 in Roman numerals
Also written in words as thirty-seven, and read aloud as X X X V I I.
Roman numeral converter
Convert a number into Roman numerals, or read a Roman numeral back into a number. Works for 1 to 3999, the range the seven standard symbols can express.
How 37 breaks down into Roman numerals
30 + 5 + 2 = 37, so XXX + V + II = XXXVII.
| Place value | Roman numeral | Why | Copy |
|---|---|---|---|
| 30 | XXX | X is 10, written 3 times | |
| 5 | V | V is 5 | |
| 2 | II | I is 1, written 2 times |
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Numbers either side of 37
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How to write 37 in Roman numerals, step by step
Roman numerals are built from largest value to smallest. Split 37 into place values first: 30 + 5 + 2.
Now swap each part for its symbols: 30 becomes XXX, 5 becomes V, 2 becomes II. Written together that is XXXVII.
No subtraction is needed here, so the symbols are simply added in descending order.
- 30 = XXX (X is 10, written 3 times)
- 5 = V (V is 5)
- 2 = II (I is 1, written 2 times)
Is XXXVII written correctly?
Yes. XXXVII is the standard modern form of 37. A valid Roman numeral never repeats a symbol more than three times in a row, never repeats V, L or D at all, and only ever subtracts I, X or C, and only from the next two larger symbols.
Those rules are what keeps a number to a single accepted spelling, so a reader never has to guess.
How to type XXXVII on a keyboard
Roman numerals are ordinary capital letters, so you can type XXXVII directly: X, X, X, V, I, I. Nothing special is required and it will work in any font, any document and any web form.
Unicode also contains dedicated Roman numeral characters such as Ⅰ, Ⅴ, Ⅹ, Ⅼ, Ⅽ, Ⅾ and Ⅿ. They exist for typesetting East Asian text and they look almost identical, but search engines, spell checkers and screen readers handle the plain letters better, so the letters are usually the right choice.
Where you will see XXXVII
Numbers of this size turn up as chapter and page numbers in front matter, as list levels in outlines, as monarch and pope regnal numbers, and in the names of recurring events such as Super Bowl finals.
If you are using XXXVII in a document, keep it in capitals. Lowercase roman numerals (xxxvii) are conventionally reserved for preliminary page numbering and sub-lists.
Frequently asked questions
How do you write 37 in Roman numerals?
37 is written XXXVII. Break it into 30 + 5 + 2, then write XXX + V + II, which joins up as XXXVII.
What number is XXXVII?
XXXVII is 37, or thirty-seven in words.
Is there another way to write 37 in Roman numerals?
XXXVII is the standard form. Any other arrangement of the same symbols would break the rule that values are written from largest to smallest.
How do I copy XXXVII?
Click the large numeral at the top of this page. It copies straight to your clipboard, ready to paste anywhere.
Do Roman numerals have a zero?
No. The system has no symbol for zero and no way to write a negative number or a fraction of one, which is one reason it was replaced for arithmetic.