---
title: "24 in Roman numerals is XXIV"
description: "24 in Roman numerals is XXIV, written as 10 + 10 + 4. How it breaks down, how to write it, and the numbers either side."
url: https://atoneplace.net/roman-numerals/24/
site: "At One Place"
---

# 24 in Roman numerals

**24 in Roman numerals: XXIV**

24 is written XXIV in Roman numerals. That is 3 symbol groups added together, reading left to right from the largest value down.

## How it breaks down

*XXIV = 10 + 10 + 4 = 24*

| Group | Value | Subtraction | Running total |
| --- | --- | --- | --- |
| X | 10 | — | 10 |
| X | 10 | — | 20 |
| IV | 4 | V − I | 24 |

## Why the smaller symbol comes first

XXIV uses subtractive notation in one place: IV means V minus I, or 4. A smaller symbol placed before a larger one is subtracted from it rather than added, which is why IX is nine and not eleven.

Only six such pairs are valid — IV, IX, XL, XC, CD and CM. That restriction is what makes the notation unambiguous: IIII and IC both look like they should work, but neither is standard, and only one spelling of any number is correct.

## The symbols

| Symbol | Value | Used here |
| --- | --- | --- |
| I | 1 | yes — 1× |
| V | 5 | yes — 1× |
| X | 10 | yes — 2× |
| L | 50 | no |
| C | 100 | no |
| D | 500 | no |
| M | 1,000 | no |

## The same number, other ways

- **In words:** Twenty-four
- **Roman numeral:** XXIV
- **Symbol count:** 4 characters
- **Binary:** 11000
- **Hexadecimal:** 18

## The numbers either side

| Number | Roman numeral |
| --- | --- |
| 22 | XXII |
| 23 | XXIII |
| 24 | XXIV ← |
| 25 | XXV |
| 26 | XXVI |

## Common questions

### What is 24 in Roman numerals?

24 is XXIV.

### What does XXIV mean?

XXIV is the Roman numeral for 24 — 10 + 10 + 4.

### How do you write 24 in Roman numerals?

Take the largest value that fits and repeat until nothing is left: X (10), then X (10), then IV (4). That gives XXIV.

## Related pages

- [22 in Roman numerals](https://atoneplace.net/roman-numerals/22/)
- [23 in Roman numerals](https://atoneplace.net/roman-numerals/23/)
- [25 in Roman numerals](https://atoneplace.net/roman-numerals/25/)
- [26 in Roman numerals](https://atoneplace.net/roman-numerals/26/)
- [4 in Roman numerals](https://atoneplace.net/roman-numerals/4/)
- [9 in Roman numerals](https://atoneplace.net/roman-numerals/9/)
- [14 in Roman numerals](https://atoneplace.net/roman-numerals/14/)
- [19 in Roman numerals](https://atoneplace.net/roman-numerals/19/)
- [40 in Roman numerals](https://atoneplace.net/roman-numerals/40/)
- [42 in Roman numerals](https://atoneplace.net/roman-numerals/42/)
- [49 in Roman numerals](https://atoneplace.net/roman-numerals/49/)
- [50 in Roman numerals](https://atoneplace.net/roman-numerals/50/)

## Sources

- Calculated on this page — At One Place (/about/)