37 in Roman Numerals

How to write 37 in Roman numerals

Roman numerals are built place by place, from the largest value to the smallest. For 37 the places are 30 (tens), 7 (ones).

1. Write 30 as XXX.
2. Write 7 as VII.

Joined together, XXX + VII gives XXXVII.

37 digit by digit

Check XXXVII by reading it back

Reading XXXVII from left to right and adding the pieces: XXX = 30, VII = 7. Together that is 30 + 7 = 37, so XXXVII and 37 match.

Mistakes to avoid with XXXVII

• 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 XXXVII never contains forms such as VX or LC.
• Read XXXVII 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 37

• 37 is an odd number and a prime number.
• In binary 37 is 100101 and in hexadecimal it is 25.
• Written out, 37 is "thirty-seven".
• The digits of 37 add up to 10.

Where you will see 37 in Roman numerals

The number 37 appears as XXXVII when denoting chapters or sections in formal outlines and legal documents. Writers choose Roman numerals for such numbering to create a clear visual hierarchy, distinguishing major divisions from subsections labeled with letters or Arabic digits.

Numbers near 37

More roman numerals

• 36 (XXXVI): previous page
• 38 (XXXVIII): next page
• Roman numerals chart: the full list