24 = XXIV
24 in Roman numerals is XXIV.
Twenty-four written with the letters X X I V.
24 in words: Twenty-four
Twenty-four in Roman numerals is XXIV. You build it as XX (20) + IV (4), writing the larger part first and reading left to right.
Notice the subtractive pair in XXIV: a smaller symbol sits before a larger one to save writing four identical letters in a row. This is the single rule that trips most people up, and once it clicks the rest of the system is straightforward.
How 24 breaks down
Reading XXIV from left to right, each group is added together to reach 24:
| Group | Value | Place |
|---|---|---|
| XX | 20 | tens |
| IV | 4 | ones |
| XXIV | 24 | total |
Frequently asked questions
What is 24 in Roman numerals?
24 in Roman numerals is XXIV.
How do you write 24 in words?
24 is written "Twenty-four" in English.
What number comes before XXIV?
The number before XXIV is 23, written XXIII in Roman numerals.
What number comes after XXIV?
The number after XXIV is 25, written XXV in Roman numerals.
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Last updated July 22, 2026. Reviewed for accuracy against the standard rules for Roman numerals.