27 in Roman numerals is XXVII, built from XX + V + II (XX = 20, V = 5, II = 2), which add up to 27.
How 27 is written in Roman numerals
The number 27 is written XXVII in Roman numerals. Roman numerals use seven letters — I (1), V (5), X (10), L (50), C (100), D (500) and M (1000) — combined from largest to smallest, with subtractive pairs such as IV (4) and IX (9). Need another number? Use the Roman numeral converter or see the 1–100 chart.
Building XXVII step by step — take the largest value that fits, write its symbol, subtract, repeat.
| Write | Value | Remaining before | Remaining after |
|---|
| X | 10 | 27 | 17 |
| X | 10 | 17 | 7 |
| V | 5 | 7 | 2 |
| I | 1 | 2 | 1 |
| I | 1 | 1 | 0 |
Where you see XXVII
Regnal and papal names use it the same way — a 27th ruler of a name is styled XXVII, as in Louis XXVII or Pope John XXVII. The 27th Super Bowl was Super Bowl XXVII; the NFL has used Roman numerals for every edition except Super Bowl 50.
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Frequently Asked Questions
What is 27 in Roman numerals?
27 in Roman numerals is XXVII. Reading it left to right gives X (10) + X (10) + V (5) + I (1) + I (1) = 27. The number below it, 26, is written XXVI, and the number above it, 28, is written XXVIII.
How do you write 27 in Roman numerals?
Write 27 as XXVII, combining X (10) + X (10) + V (5) + I (1) + I (1). Roman numerals are built by taking the largest value that still fits, writing its symbol and subtracting it, which reduces 27 in 5 steps: X leaves 17, X leaves 7, V leaves 2, I leaves 1, I leaves 0. Every symbol keeps the same value wherever it stands, so the order is fixed and XXVII is the only standard spelling of 27.
Which letters make up XXVII?
XXVII is made up of X twice, V once and I twice. X is worth 10, V is worth 5 and I is worth 1. Added together those values come to 27, because Roman numerals are read by summing the symbols from left to right.
What is 27 times ten in Roman numerals?
27 times ten is 270, which is CCLXX in Roman numerals, not XXVII with a letter added on the end. Roman numerals have no place value, so multiplying by ten respells the whole numeral instead of shifting digits along. Compare XXVII for 27 with CCLXX for 270.