29 in Roman Numerals
29 in Roman numerals is XXIX. It is built from two parts: 20 + 9 = XX + IX. Read it from left to right and add the values to get 29. Copy it below, see why it is written this way, and check the numbers before and after. The converter handles any number from 1 to 3,999.
29 in Roman numerals is XXIX.
29 in Roman numerals: the breakdown
| Place value | Numeral | Value |
|---|---|---|
| 20 | XX | 20 |
| 9 | IX | 9 |
| Total | XXIX | 29 |
20 plus 9 is 29, so XX followed by IX is XXIX.
Why XXIX and not XXVIIII?
XXIX uses the subtractive pair IX. Written by adding only, 29 would be XXVIIII, but a letter may repeat only three times in a row, and XXVIIII repeats I four times.
How to read XXIX
- XX is 10 + 10, which is 20.
- IX is 10 minus 1, which is 9.
- Add 20 + 9 to get 29.
The numbers around 29
Facts about 29
- 29 is an odd number.
- 29 is a prime number: it can be divided only by 1 and itself.
- The digits of 29 add up to 11.
- XXIX is 4 letters long. It uses the symbols X and I.
Convert another number
29 = 20 + 9 = XX + IX
What number is XXIX?
XXIX is the number 29. Reading it from left to right, XX is 20 and IX is 9, which adds up to 29.
Questions and answers
What is 29 in Roman numerals?
29 in Roman numerals is XXIX. It is made of two parts: 20 + 9 = XX + IX. Read XXIX from left to right, add the parts, and you get 29. Use the converter on this page to check any other number from 1 to 3,999.
How do you write 29 in Roman numerals?
Split 29 into its place values, write each one in Roman numerals, and join them from largest to smallest. For 29 that is 20 + 9, which is XX + IX, so the answer is XXIX. Check that no letter repeats more than three times in a row.
What number is XXIX?
XXIX is 29. Read it in place-value parts from left to right: XX is 20, IX is 9. Add the parts to get 29. Letters after a larger or equal letter are added, and a smaller letter before a larger one is subtracted. You can also type XXIX into the converter to read the number back.
Why is 29 written XXIX and not XXVIIII?
XXIX is the standard form. XXVIIII breaks a rule: a letter may repeat only three times in a row, and XXVIIII repeats I four times. Writing XXIX keeps every letter within those limits and makes 29 easy to read at a glance.