24 in Roman Numerals
Twenty-four is written XXIV in Roman numerals. It uses the subtractive rule, where a smaller glyph placed before a larger one is taken away rather than added, which keeps the numeral short and is the part most people find fiddly.
How XXIV is formed
Reading left to right, 24 breaks into these additive parts. Each Roman symbol is added in turn to reach the total.
X + X + IV = 10 + 10 + 4 = 24.
Where 24 in Roman numerals is used
- Chapter, act or appendix numbering in books and plays.
- Super Bowl XXIV and other numbered championship events.
- Outlines, exam questions and list items in formal documents.
- Monarch and pope names, for example the 24th of a royal line.
Good to know about 24
- Twenty-four, XXIV, is the number of hours in a day and a much-searched numeral thanks to the TV series.
Convert another number
24 is written XXIV in Roman numerals.
Frequently asked questions
How do you write 24 in Roman numerals?
Write 24 as XXIV, combining X + X + IV. Start from the largest value that fits and work down until nothing is left over.
Why is 24 not written XXIIII?
XXIV uses the subtractive rule: a smaller symbol placed before a larger one is taken away, so you never repeat a symbol four times. XXIIII breaks that rule, which is why XXIV is the only correct form.
Which Super Bowl is XXIV?
Super Bowl XXIV is the 24th Super Bowl, played in 1990. The NFL sets its championship number in Roman numerals, which is why so many people look up values like XXIV.
What are 23 and 25 in Roman numerals?
23 is XXIII and 25 is XXV. Neighbouring numbers often change length in surprising ways, which is why each has its own page.